Yáo zhǐ 摇指 (trad. 搖指) “Shaking” or “Rocking Finger”

Use the index finger or the thumb of the right hand to pluck a single string in rapid succession by “shaking” the finger back and forth across the string. The physical motion is better described as a rolling of the wrist and forearm. This technique is very pronounced in the Henan school of music. It is used to extend the duration of a note at a controlled volume. It is also called Lúnzhǐ 轮指 in Shandong. Ferguson offers the additional name “Lùn 論” but is the only source who does so.

Alternative notation: