Answer:
Since the fifty fifth year of Qianlong's reign in the Qing Dynasty (1790), four Hui troupes, mainly Anhui artists, such as Sanqing, Sixi, Chuntai, and Hechun, which had previously performed in the south, have successively entered Beijing, cooperated with Han Opera artists from Hubei, accepted part of the repertoire of Kunqu Opera and Qin Opera Opera, performed harmoniously, and absorbed some local folk tunes. Through continuous exchanges and integration, Beijing Opera was finally formed
Step-by-step explanation: