Fú cuō 拂撮 “Brushing Pinch”
Run the thumb across several strings in a gesture away from the performer. As the thumb strikes the last string, use the middle finger to pluck a string one octave deeper with a closing motion. The string plucked with the middle finger may be bent to a different pitch. Essentially, this is a Fú followed by a Dà cuō, on one open and one bent string.