What are the national stringed instruments in China?

Er Xian: Erhu, Jinghu, Banhu, Gao Hu, Zhonghu, Gehu, Ma Touqin, Genka, Land Rover, Huluqin, Nanyin Er Xian, Xiqin, Coconut Hu, Xiaohu (also with four strings), Naxi Huqin, Maguhu, Leiqin, Jinghu, Huerhqin and Diaoqin (also known as pendants and pendants)

Three Sages: Dolan Ai Jieke, Sattar.

Four strings: Ruan, (once called violin), Pipa, Yueqin, (also known as Liu Yeqin, King Kong Tuishi, Pipa. There are also two strings and three strings).

Others: Qin Wa (namely "lyre"), (1 1 or 12 strings), Zheng (ancient 13 or 16 strings, now 25 strings), harp (also called "50 strings"). Zhang's second, third and fourth chords are different.

Note: The above information is for personal investigation only, not professional information, for reference only. I still hope I can help you.