What is the origin of Peking Opera?

Beijing opera originated from four local operas: one is Anhui opera, which was first popular in Anhui province; Second, Han opera is popular in Hubei; The third is Kunqu Opera, which is popular in Jiangsu. Fourthly, Shaanxi Opera, also known as Bangzi, is popular in Shaanxi. After entering Beijing in the last years of Qianlong and the early years of Jiaqing, Class Four of Huizhou School cooperated with Hubei artists and influenced each other during Jiaqing and Daoguang years. They gradually accepted some plays, tunes and performance methods of Kunqu Opera and Shaanxi Opera, and absorbed some folk tunes and Beijing dialect, and gradually merged and developed.