Lingxian Terms of Service

Chapter 1. General provisions and definitions

1.1 Parties
These Terms are concluded between the operator of the Lingxian project and the user. Lingxian is currently operated independently by an individually owned business, which provides the notation editor (a tool for editing guqin jianzipu), the Lingxian platform (including score management, sharing and collaboration) and other ancillary services.

1.2 Scope of products and services
The "Service" includes, without limitation:
(1) the notation editor: creating, editing, laying out and exporting guqin jianzipu;
(2) the Lingxian platform: cloud storage, score library management, version history, sharing and permissions, collaboration spaces;
(3) intelligent features: jianpu conversion (turning numbered notation into jianzipu with candidate readings), recommendations, the Qinling assistant;
(4) other features: audio playback, format conversion, data import and export, account management, subscriptions;
(5) other related features and services that may be launched in future.

1.3 Key definitions
(1) User content / scores: content you create, edit, upload, import or otherwise submit in the Service, including jianzipu data, text, audio files, annotations, tags and metadata;
(2) Subscription services: paid features, entitlements or quotas that require payment, including monthly, yearly and other paid plans;
(3) Third-party services: external providers integrated with or linked from the Service, including payment services (such as Alipay and WeChat Pay), cloud storage, email services and analytics tools;
(4) Account: the personal account you create to use the Service, including the email address, password, referral token and other credentials;
(5) Share link: a URL you create that gives access to a particular score or resource, whether public or restricted;
(6) Score content: the structured notation data in a score, including pitch, string order, hui positions, fingerings, durations, rhythm and section structure; it excludes the score title, the names of those who reconstructed or transcribed it, annotations, inscriptions and other information that could identify you.

1.4 Effect
These Terms take effect when you register for, sign in to or use the Service. If you do not agree with any clause, you must stop accessing and using the Service immediately.

Chapter 2. Accounts and registration

2.1 Registration
Registration is by email. You must register with a valid email address and set a secure password. At certain stages (such as a closed beta) registration may require a referral token or other credential, in which case the corresponding supplementary terms apply (such as the Beta Supplementary Terms).

2.2 Registration and account security
(1) You must register with a real, valid email address and set a secure password;
(2) you are responsible for safeguarding your credentials (email, password, referral token and others) and for all activity under your account;
(3) if you discover unauthorized use of your account or a security risk, notify the operator immediately and cooperate with remedial measures;
(4) you may not lend, transfer, rent or otherwise provide your account to others.

2.3 One account per person
Each natural person may in principle register and use only one account. The operator may restrict or suspend accounts involved in bulk registration, multi-account abuse or malicious registration.

2.4 Age and legal capacity
(1) The Service is intended for adults aged 18 or over;
(2) if you are aged 14 to 17, use the Service with the consent and supervision of your legal guardian;
(3) the Service is not intended for children under 14; if the operator discovers a user is under 14 it may terminate the account and delete the related data;
(4) you must have full legal capacity or the valid consent of your legal guardian. If you use the Service on behalf of an institution or organization, you warrant that you are duly authorized.

2.5 Reserved clause on identity verification
Under the laws of the People's Republic of China, the operator may in future require users to provide real identity information for verification. You must then cooperate with the verification process as required by law; otherwise account features may be affected.

2.6 Accuracy of registration information
You warrant that the information you provide (email address, name, contact details and others) is true, accurate and complete, and undertake to keep it up to date. You bear the consequences of inaccurate or false information.

Chapter 3. The Service and rules of use

3.1 Core editor features
The Service provides creation, editing, layout and export of guqin jianzipu, including:
(1) entry, editing and formatting of jianzipu symbols;
(2) staff notation and jianzipu on one page;
(3) audio playback and preview;
(4) export in document, image, structured-data and other formats;
(5) cloud storage, autosave and version management;
(6) score sharing, permissions and collaboration spaces.

3.2 Updates and changes
The operator may update, upgrade, adjust or discontinue features (free or paid) at any time. For material changes, or changes affecting entitlements you have paid for, the operator will give reasonable advance notice in the app, by email or by announcement.

3.3 Experimental features
Some features may be labeled "beta", "experimental" or "research". Their stability, accuracy and availability are not guaranteed. By using them you accept the associated risks.

3.4 Prohibited conduct
When using the Service you may not, among other things:
(1) upload, distribute or create content that violates the laws of the People's Republic of China, including content that endangers national security, disrupts public order or infringes the rights of others;
(2) upload or distribute malware, viruses, trojans or ransomware, or carry out any attack, intrusion or sabotage;
(3) circumvent or defeat the Service's permission controls, access controls, subscription limits, security mechanisms or other technical protections;
(4) scrape, download or access data by crawler, automated script, bulk tool or other means beyond reasonable use, in a way that affects platform stability or other users;
(5) post unlawful, violent, hateful, harassing, fraudulent, pornographic, gambling-related or other content the operator reasonably considers inappropriate;
(6) impersonate others, falsify identity, or make misleading or false claims;
(7) reverse-engineer, decompile, crack, decrypt, extract source code from or create derivative works of the Service without permission;
(8) sell, rent or transfer accounts, or otherwise profit commercially from them;
(9) infringe the intellectual property, portrait, privacy, reputation or other rights of others;
(10) use the Service for any unlawful activity or to help others do so.

3.5 Enforcement
For breaches of these Terms or of the law, the operator may, among other measures:
(1) issue warnings, restrict features, suspend the Service or terminate the account;
(2) remove infringing content, disable share links, revoke referral tokens;
(3) report to the competent authorities or assist judicial investigations;
(4) pursue legal liability and claim compensation.

3.6 Results of intelligent features
Readings, answers and suggested edits produced by jianpu conversion, recommendations and the Qinling assistant are generated automatically by rules and models. They may contain errors or depart from the conventions of your school, and are for reference only. Check them before adopting them, especially for teaching or publication.

Chapter 4. Intellectual property

4.1 Ownership of the platform software
The intellectual property in the Service's software, interface design, trademarks, logos, documentation, underlying engines (including the jianzipu rendering engine and the audio engine), source code and other technical work belongs to the operator or its licensors. Without the operator's written permission you may not copy, modify, distribute, sell, rent, reverse-engineer or create derivative works, except as expressly permitted by law.

4.2 Your scores belong to you
The copyright and other rights in the scores and other content you create, edit, upload or import in the Service belong to you or the original rights holder. Using the Service, subscribing to a paid plan or granting the licenses in these Terms does not transfer these rights to the operator.
Specifically, except as provided in clauses 4.3, 4.4 and 4.5, the operator does not acquire copyright, commercial-use rights, publication rights, promotional display rights or course-use rights in your scores by virtue of your use of the Service or a paid plan. Without your separate consent the operator will not display, distribute, adapt or publish your unpublished scores, use them for marketing or teaching, or provide them to third parties.
If you wish the operator to display or publish your scores or use them in courses or joint projects, the parties shall agree separately in writing on the specific work, manner, scope, duration, attribution and remuneration; these Terms alone do not grant such authorization.

4.2b Attribution and integrity of the work
The operator respects your rights of attribution, modification and integrity.
(1) When displaying your scores with your separate consent, the operator will credit the reconstructor and transcriber names you entered in the score; where layout or video format makes individual credits impractical, credits may be grouped in a reasonable place, but authorship may not be concealed, misattributed or altered;
(2) the operator may not distort the work's intent, alter its core content or use your scores in a way that damages your reputation as a creator;
(3) the removal of attribution and other identifying information for training purposes under clause 4.4 protects your identity from being linked and does not diminish your right of attribution under this clause.

4.3 License needed to provide the Service
So that the Service can operate, you grant the operator a worldwide, non-exclusive, royalty-free license to:
(1) store, copy and back up your user content;
(2) process, display, transmit and convert your user content (generating previews, exporting documents, generating audio and so on);
(3) display or share your user content with other users within the scope you authorize (public links, collaboration spaces and so on);
(4) carry out technical processing necessary to improve service quality, troubleshoot or provide support.
The operator sublicenses this license only to contractors providing technical support for the Service (such as cloud providers) and only for these purposes. Except as provided in clause 4.4, this license is limited to what is necessary to provide the Service.

4.4 Use of score content to improve jianpu conversion and similar features
To convert numbered notation into appropriate jianzipu, the system must learn from many real scores how players commonly choose strings, hui positions, fingerings and rhythm, so that it can produce more accurate readings closer to playing practice. To keep providing and improving this feature, you agree that:
(1) License: you grant the operator a non-exclusive, free license to use the score content you save in the Service (as defined in clause 1.3) to train, evaluate and improve Lingxian's own jianpu conversion, recommendation and related features and the models they use. The license remains in effect while you use the Service;
(2) De-identification: before such use the operator removes the score title, reconstructor and transcriber names, annotations, inscriptions and other information that could identify you, and processes the content separately from your account information;
(3) Limits: the operator will not sell your score content, will not provide it to third parties to train their models, and will not publish your unpublished scores under this clause;
(4) Ownership of results: models, parameters and features trained or improved on this content belong to the operator. The operator will take reasonable measures to prevent intelligent features from reproducing a user's unpublished score in full;
(5) Deletion and account closure: after you delete a score or your account, its content is no longer used for subsequent training; models already trained are not retrained as a result.
This clause does not change the allocation of rights in clause 4.2. Use of other data, such as editing behavior and Qinling conversations, to improve intelligent features requires your separate consent; see clause 6.6.

4.5 Additional license for public scores
If you create a public share link or set a score to public access, you understand and agree that:
(1) anyone with the link or access may view, download or share the content;
(2) the operator may display such public content within the platform (score library, recommendations and so on) but will not use it for commercial sale or purposes beyond platform features, except as provided in clause 4.4;
(3) you are responsible for onward distribution or use by third parties; the operator is not.

4.6 Feedback and suggestions
The operator may use opinions, suggestions, feedback and feature requests you provide ("feedback") free of charge to improve the Service, develop new features or for other reasonable purposes, without payment or other obligation to you, unless otherwise agreed in writing.

4.7 Third-party intellectual property
You warrant that your user content does not infringe the intellectual property, portrait, privacy or other rights of any third party. If your content leads to third-party complaints, claims or legal disputes, you bear full responsibility and shall compensate the operator for any resulting loss.
Note in particular: most historical printings of guqin jianzipu are in the public domain, but modern reconstructions (dapu), collations, transcriptions, arrangements and annotations may still be protected by copyright. If you enter, organize or adapt such work, you hold rights only in your own original additions, collation and arrangement, and do not acquire copyright in the original by entering it; whether a use is fair is for you to judge in the circumstances, and you bear the responsibility.

Chapter 5. Paid services and subscriptions

5.1 Types and billing
The Service may offer free core features and paid premium services, including:
(1) subscription plans: monthly and yearly;
(2) premium features: advanced editing tools, more storage, more exports, collaboration seats and so on;
(3) other paid entitlements as shown on the purchase page.

5.2 Payment processing
Payments are processed by third-party payment providers (such as Alipay and WeChat Pay). The operator does not store your full payment account details. The payment process is governed by the provider's own terms and privacy policy, which you must also observe.

5.3 Automatic renewal
If you purchase a subscription (monthly or yearly), it renews automatically and is charged to your payment method unless you cancel before the end of the current billing period. You can cancel automatic renewal at any time in account settings; cancellation takes effect at the end of the current period.

5.4 Refunds
(1) Monthly subscriptions: within 7 days of payment, if you have not used features available only on the paid plan, you may request a full refund; after substantive use, refunds are generally not given, but if the Service is unavailable for an extended period for reasons attributable to the operator, the operator may provide compensation or an extension at its discretion;
(2) Yearly subscriptions: within 7 days of purchase you may request a partial refund, calculated as:
refund = amount paid − (days used / 365) × amount paid.
After 7 days, refunds are generally not given;
(3) if force majeure, a major system failure or reasons attributable to the operator make the Service unavailable for an extended period, the operator may provide a refund, compensation or extension within reason;
(4) refund requests should be submitted by email or through the feedback system; the operator will process and reply within 15 working days.

5.5 Price changes
The operator may adjust prices, but a change does not affect a billing period already in effect. If your subscription is about to renew, the operator will notify you of the new price at least 30 days in advance in the app or by email. If you do not accept the new price, cancel before renewal.

5.6 Taxes
You bear any applicable taxes arising from your purchase (such as VAT or consumption tax). If the operator is legally required to withhold taxes, you agree to cooperate and bear them.

5.7 Bills and invoices
You can view past bills in account settings. For an invoice, contact the operator by email or through the feedback system with the necessary invoicing details.

5.8 After a subscription expires, is cancelled or downgraded
When a paid subscription expires, you cancel renewal or you downgrade:
(1) your scores are not deleted; scores you created remain viewable, exportable and printable;
(2) content beyond the free plan's quota becomes read-only; you may export it or trim it to within the quota, and the operator will not delete it for you;
(3) the operator provides a grace period of at least 30 days from expiry, during which you have full access to export all your scores;
(4) when you resume paying, read-only status lifts immediately and your content and settings are unaffected;
(5) this clause does not affect suspension or termination for breach under clause 8.5.

Chapter 6. Data and privacy

6.1 Privacy Policy
The operator takes the protection of personal information seriously. For the collection, use, storage, sharing and cross-border transfer of personal information and your rights, see the Privacy Policy, which forms part of these Terms and has the same legal effect.

6.2 Types of data
The Service may collect and process:
(1) account data: email, password (stored encrypted), referral token, registration time;
(2) content data: the scores, text, audio and metadata you create;
(3) usage data: access logs, operation records, device information, network address, browser type;
(4) payment data: order records and payment status (full payment account details are handled by the payment provider and not stored by the operator);
(5) communications: emails, messages and feedback between you and the operator;
(6) Qinling conversation data: your questions to the Qinling assistant, its answers, and the current score excerpt and page state sent with them.

6.3 Storage and security
(1) The operator applies reasonable technical and organizational measures, including encryption in transit, access control, regular backups and security audits;
(2) data is stored and processed with cloud providers that meet industry standards;
(3) despite these measures the operator cannot guarantee absolute security. You understand and accept that any network transmission or storage carries inherent risk.

6.4 Storage location and transfer
Service data is stored mainly on servers within the People's Republic of China. Where the technical architecture requires cloud providers located abroad (content delivery acceleration, hosting), the operator will take the measures required by the Personal Information Protection Law and related rules to keep data secure and protect your rights.

6.5 Your data rights
Under the Personal Information Protection Law and related rules you have the right to:
(1) be informed of how the operator collects, uses and stores your personal information;
(2) access your personal information in account settings;
(3) correct inaccurate or incomplete information;
(4) request deletion, except where retention is required by law;
(5) export your user content (portability);
(6) withdraw consent to non-essential processing;
(7) delete your account.
To exercise these rights, contact the operator by email or through the feedback system. The operator will respond within the period required by law.

6.6 Optional consents and cookie settings
On your first visit a consent prompt appears at the bottom of the page. You may choose "Accept all" or select items individually under advanced settings, and change them later through "Cookie and data settings" in the footer:
(1) Required: needed for sign-in state, security and preferences; always on;
(2) Site analytics: visitor identifier, page path and time on page on the marketing site, to understand page performance and improve the site;
(3) Improving intelligent features: editing behavior in the editor (which note was changed, which candidate reading was chosen) and Qinling conversations, to improve jianpu conversion, recommendations and the Qinling assistant.
Optional items are not enabled without your consent. You may withdraw consent at any time; withdrawal does not affect data already lawfully processed or the core editing features. Use of score content to improve jianpu conversion is governed by clause 4.4 and is not an optional consent under this clause.
Product updates and event notices are sent only with your consent, and you may ask the operator to stop them at any time. Technical details are in the Privacy Policy.

6.7 Minors
If you are under 18, the operator gives your personal information the special protection required by the Personal Information Protection Law. If you are under 14, the operator may terminate the account and delete the related data.

Chapter 7. Disclaimers and limitation of liability

7.1 Service provided "as is"
The Service is provided on an "as is" and "as available" basis. The operator makes no express or implied warranty as to its fitness, stability, accuracy, completeness, timeliness or error-free operation.

7.2 Force majeure and exclusions
To the extent permitted by law, the operator is not liable for interruption, data loss, malfunction or other loss caused by:
(1) force majeure: earthquake, typhoon, flood, war, epidemic, government action, changes in law;
(2) third-party outages: failures of cloud providers, payment providers, network operators, content delivery networks;
(3) network failures: internet outages, hacking, distributed denial-of-service attacks, computer viruses;
(4) your own actions: device failure, operating error, credential leaks, failure to back up;
(5) maintenance: reasonable downtime or restricted access for upgrades, maintenance or hardening, with advance notice;
(6) other circumstances not caused by the operator's intent or gross negligence.

7.3 Backups and data loss
The operator recommends backing up important data regularly. Although the operator maintains reasonable backups, it cannot guarantee that data will never be lost, and to the extent permitted by law is not liable for loss caused by technical failure, force majeure or other causes.

7.4 Cap on liability
To the maximum extent permitted by law, the operator's total liability to you, whether in contract, tort or otherwise, shall not exceed the total amount you paid the operator in the preceding 12 months. If you have paid nothing, the cap is RMB 100.

7.5 Indirect loss
To the extent permitted by law, the operator is not liable for indirect, incidental, special, punitive or consequential loss, including loss of profit, reputation, data or business interruption.

7.6 Third-party content and links
The Service may link to or integrate third-party services, which are the responsibility of their providers and governed by their terms. The operator does not warrant their availability, accuracy, security or legality and is not liable for loss they cause.

7.7 Responsibility for user content
You bear full legal responsibility for the content you upload, create or share. Third-party complaints, claims, litigation or administrative penalties arising from your content are your responsibility, and you shall compensate the operator for resulting loss.

7.8 Mandatory law
Some jurisdictions do not allow the exclusion or limitation of liability. Where applicable law prohibits a disclaimer or limitation in this chapter, it applies to the maximum extent the law allows.

Chapter 8. Changes and termination

8.1 Versioning
These Terms are versioned in the format "four-digit year.two-digit month". The current version is 2026.09.

8.2 Changes
The operator may amend these Terms in response to changes in law, business or the Service. For material changes (including changes to rights and obligations, pricing or disclaimers), the operator will give at least 15 days' notice by:
(1) an in-app dialog or banner;
(2) email to your registered address;
(3) an announcement on the home page or related pages.

8.3 Effect of amended Terms
Amended Terms take effect on the date specified in the announcement. Continued use after that date constitutes acceptance. If you do not agree, stop using the Service and delete your account before the effective date.

8.4 Termination by you
You may stop using the Service at any time. If you have a subscription, cancel automatic renewal in account settings and it ends at the close of the current billing period. You may also request account deletion.

8.5 Suspension or termination by the operator
The operator may suspend or terminate your account or the Service if:
(1) you breach any clause of these Terms;
(2) your conduct violates the law or poses a security risk;
(3) a court, administrative or regulatory authority requires it;
(4) your account has been inactive for an extended period (such as no sign-in for over 12 months);
(5) the operator decides for business reasons to discontinue all or part of the Service;
(6) for other reasonable cause.

8.6 Data after termination
(1) After termination your access to the Service ends;
(2) the operator retains your user content for 30 days so that you can export or back it up; after 30 days the operator may delete all data;
(3) if termination results from your breach, the operator may delete data immediately without further notice;
(4) data that the law requires to be retained (such as transaction records and logs) is kept for the statutory period.

8.7 Governing law
The formation, effect, performance, interpretation and dispute resolution of these Terms are governed by the laws of the People's Republic of China, excluding its conflict-of-law rules.

8.8 Disputes
Any dispute arising from or relating to these Terms shall first be resolved through friendly negotiation. Failing that, either party may bring an action before the competent people's court at the operator's domicile.

8.9 Severability
If a competent court or arbitral body finds any clause invalid or unenforceable, that clause shall be read as closely to its original intent as the law allows, and the remaining clauses continue in full force.

8.10 Entire agreement
These Terms, the Privacy Policy, any applicable supplementary terms (such as the Beta Supplementary Terms) and other rules, notices and announcements published by the operator together constitute the entire agreement between you and the operator and supersede any prior oral or written agreement on the same subject, unless otherwise agreed in writing.

Contact

For questions, comments or suggestions about these Terms, or to exercise your data rights, contact us through:

• Email: send an email
• Feedback: Contact

The operator will reply within 15 working days of receiving your request.