Qinqin

The qinqin (秦琴; pinyin: qínqín; Vietnamese: Đàn sến[1]) is a plucked Chinese lute.

[4] In its hexagonal form (with rounded sides), it is also referred to as meihuaqin (梅花琴, literally "plum blossom instrument").

A similar instrument, the two-stringed đàn sến, has been adapted from the qinqin for use in the traditional music of southern Vietnam.

The fret spacing used on the qinqin is not the same as on Western instruments such as the guitar or banjo, so the notes do not correspond to the 12TET (12-tone equal temperament) system.

The bridge position should be slightly adjusted so the note produced is "spot on" (but an octave different) at both open string and stopped at fret 7.