Whose work is the zaju Up the Wall? What are its themes and innovations?

China ancient Yuan Zaju belongs to Zaju. Immediately on the wall are the works of Bai Pu, a famous dramatist in Yuan Dynasty. Pei, the son of Shangshu, was ordered to Luoyang to buy flower seedlings and happened to meet Li Qianjin, the manager's daughter. They fell in love at first sight and made a private life. Li Qianjin has raised a pair of children in Pei's back garden for seven years, but the elders of Pei's family still don't know. One day, it was smashed, but it was not allowed for Pei Shaojun's father. Li Qianjin struggled fruitlessly and was abandoned to go home. Pei became famous, remarried Li Qianjin, and the husband and wife finally reunited. The play celebrates the pursuit of free marriage. Although it is based on love, it is unique.