2. Author: Ma Zhiyuan, a dramatist and essayist in Yuan Dynasty. No. Dongli, in a word. Most (now Beijing) people. He used to be a provincial officer in Jiangsu and Zhejiang provinces (promotion in Jiangsu and Zhejiang provinces). Retire in old age. There are fifteen kinds of zaju, and there are seven existing ones. Most of his works are based on immortals and Taoism, and he is known as "Ma Xian". The lyrics are bold and free. Together with Guan Hanqing, Bai Pu and Zheng Guangzu, they are called "the four masters of Yuan Opera". His achievements in Sanqu are especially famous in the world, including Dongli Yuefu series, with more than 100 poems and 23 episodes.