China's traditional opera originated from song and dance in primitive society, and only after the Han and Tang Dynasties to the Song and Jin Dynasties did it form a relatively complete traditional opera art, which was mainly composed of three different artistic forms: folk song and dance, rap and comedy.
Zaju in the Northern Song Dynasty developed together with hundreds of dramas in Washe Goulan. In the Southern Song Dynasty, it developed into two things with different names, namely Song Zaju and Jin Zaju. Song Zaju is the earliest drama form in China, and it is also an important art form before the transition to Yuan Zaju.
To sum up, we can draw the following conclusions: China's opera art form should be a song and dance that originated from primitive society. In the Southern Song Dynasty, Song Zaju became the earliest opera art form in China.