When did China Opera come into being?

It should have begun to take shape in the Song and Yuan Dynasties.

Including the coexistence of Jin, Song and Yuan Dynasties.

You can say that it was the Jin and Song Dynasties, that is, the late Song Dynasty. Or the beginning of the yuan dynasty.

In the Tang and Song Dynasties, China's traditional operas also took the form of legends and speeches. Although China's traditional operas have taken shape, the basic songs, essays and scripts are still separated.

During the Song and Jin Dynasties, storytelling novels, Zhu Gong dialect and other artistic forms developed to some extent, while storytelling, rap art and Zhu Gong dialect were the predecessors of the development of traditional Chinese opera. In the Tang Dynasty, the art of speaking was still in its infancy. In the Song Dynasty, there were many famous plays and Zhu Gong tunes. At this time, Southern Opera began to develop gradually in Jiangsu and Zhejiang provinces.

In the middle and late Yuan Dynasty, traditional Chinese opera gradually developed and prospered.