zhēng
guzheng or long zither
long zither with 13 to 16 strings, developed from guqin 古琴 during Tang and Song times
Japanese koto
gǔ zhēng
zither or guzheng
large zither with 13 to 25 strings, developed from guqin 古琴[gu3 qin2] during Tang and Song times
gū zhēng
to act on one's own
to fight alone