The protagonist Song Jiang is a physical education teacher at a prestigious school in a metropolitan city. He is 30 years old. He has been a national first-level swimming athlete in college. He has a handsome appearance, tall and powerful, and is a good runner. He has participated in urban marathon invitational competitions. There are many beautiful suitors of various identities around him, but he is unmoved. What he likes are girls who have a common language with him, such as football players and Sanda athletes. He has not found a suitable one for the time being. Song Jiang in "The Margin" has the same name and surname. As a sports student, the only book he usually likes to read is "Water Margin". He has a special liking for Hu Sanniang in it. It's not worth it for her to marry a small character like Wang Ying. He is also dissatisfied that Song Jiang in "Water Margin" was later recruited. An's behavior was very disdainful, and he believed that if he was Song Jiang inside, he should not be recruited under any circumstances. He should rely on the favorable terrain of Liangshan to carry out construction, train the army, develop agriculture, industry and technology, and become an independent kingdom of 800 miles in Liangshan. One day, I went hiking with my friends and accidentally fell into the cliff. I traveled to the Water Margin and became the real Song Jiang. This is where the story begins.