进复up and back
Pinyin: jìn fù
Left hand, slidingAfter the stopped note sounds, the left finger moves up one position to sound it, then returns to the home position for a third note.
How it is played
After the pluck, the finger keeps pressing and moves quickly up one position (usually the next note above, or the hui the score names), then back to where it started. Neither the move up nor the return is plucked; both ride on the residual vibration. Both must land precisely, in roughly even rhythm, not smeared into one slide. A wide move up is a large jin fu, a narrow one a small jin fu.
How it sounds
After the plucked note come the upper note and the return, both lighter: unplucked notes carried by the string's ring.
In the classical handbooks
凡進復退復有言大小者，以上下之位有濶窄之別，亦必當位協調，不可妄行也。Gist: When jin fu and tui fu are called large or small, it is because the positions above and below may be wide or narrow apart; they must still agree with the right positions and not be done at random.
Easily confused with
- 撞zhuàng· knockZhuang also goes up and comes back, but so fast it sounds like one note; jin fu rests at both positions and gives two clear notes.
- 分开fēn kāi· split pluckFen kai plucks again on returning to the home position; jin fu is plucked only once.
- 往来吟wǎng lái yín· to-and-fro vibratoWang lai yin is like two jin fu in a row with vibrato at the upper position; jin fu goes up and back once, without vibrato.
References
- 《琴学入门》国家图书馆藏刻本第 2 册（Wikimedia Commons 扫描）(opens in a new window)Primary source
- 颐和琴社《减字谱·指法符号简释》(opens in a new window)Qin community