How many strings and keys are there in various musical instruments?

Erhu: There are two strings and four strings.

Yueqin: four strings

Sanxian is of course self-evident.

Pipa: four pieces

Zhongruan: Four.

Qin Liu: Four.

Guzheng: No, there are 12, 13, 14, 15 and 16 strings. Many improved guzheng have 18 strings, 19 strings and 2 1 strings.

Western music

String-pulling is mainly violin, generally four-string, but also six-string cello.

The most common plucking styles are guitar, lyre and pipa, as well as six strings and twelve strings (this is uncertain for the time being).

Harps come in different sizes. The small ones have 22 strings, 25 strings, 3 1 string, 36 strings and 40 strings, and the big ones have more than 50 or 60 strings.