Very nice! I think the musicians in this video are the Zhang Family Band (张家班), a lao qiang (老腔) performing group from Shuangquan (双泉村), a village near Huashan Mountain (华山) in Huayin (华阴市), Weinan (渭南市), on the Guanzhong plain (关中平原) about two hours east of Xi'an, Shaanxi province (陕西省), northwest China.
It is so punk rock but obviously the rhythms & melodies are very complex & took years of discipline. Totally different from Beijing/Cantonese opera or Kunqu!