What is the author's brief introduction and writing background of Water Margin?

Shi Naian was originally from Suzhou, and was born in Xinghua in the second year of Yuan Zhen (1296). He is the son of a boatman. He entered a private school at the age of thirteen, a scholar at the age of nineteen, a scholar at the age of twenty-nine and a scholar at the age of thirty-five. Between the ages of 35 and 40, he worked as an official in Qiantang for two years. Later, he did not agree with the status quo and returned to Suzhou. Zheng Zheng was 60 years old in the 16th year (1356), and Zhang Shicheng was recruited by Sue. Make friends with Bian and Zhang Shicheng. Later, I lived in Jiangyin and taught in Zhutang Town. 7 1 When he was 72 years old, he moved to Xinghua and moved to Baijuchang and Shijiaqiao. Zhu Yuanzhang repeatedly refused to levy; He died in Huai 'an at the age of 75 and lived in Hongwu for three years (1370). Co-authored Water Margin with Luo Guanzhong, one of the four classical novels.

After receiving the letter, Shi Naian left his eldest brother Yan Ming in Suzhou, took his second wife Shen Shi, his second brother Chae Yeon and his master Luo Guanzhong, and braved the wind and smoke to cross the river north. He first lived in Gu Ting's home in Xinghua, and then, with the help of Gu Ting, he bought land and real estate in the sparsely populated seaside Baima Farm east of Xinghua, where he lived in seclusion. Shi Naian met many farmers and salt people.