A Petty Official Chapter 171

Kong Ji created forms, collected many pieces of music and stories, and allowed them to be randomly combined together to bring out new vitality.

Ethan Yun's idea gave this type of tune unlimited possibilities and development.

Kong Ji came up with the idea of   using music to perform plays, which brought various palace tunes to the world.

Ethan Yun proposed to absorb the performance method of role-playing and adding more stage actions from zaju, which made Zhugongdiao take a big step forward and became the prototype of opera, which was the biggest difference between it and the later Yuan zaju.

---The biggest difference between Yuan Zaju and Zhugongdiao is that Yuan Zaju is performed by different roles on the stage with singing, reciting, acting and fighting, while Zhugongdiao is performed by one person from beginning to end.