How many years has Yang Opera been founded?

Yangju is a type of opera that originated in Yangzhou, Jiangsu and grew up in Shanghai. It is based on the ancient "Huagu Opera" and "Xianghuo Opera", and developed by absorbing Yangzhou Qing opera and folk songs. It was originally called "Huaiyang Literary Opera" and was called "Huaiyang Opera" in the mid-1930s. After the founding of New China, Renamed Yang Opera, it is mainly popular in northern Jiangsu, Jiangnan, Shanghai and parts of Anhui.