Sihu, also known as Sixian and Erjiaxian. Originated from the ancient Xiqin. Popular in Inner Mongolia, Northeast and North China provinces and regions. "Qing Huidian" records: In May 1632 (the sixth year of Tiancong), "Emperor Taizongwen pacified Chahar, obtained his music, and listed it as Yan music, which is called "Mongolian Music". Among them, "Fanbu Ensemble" used 15 Among t...