According to Baidu Encyclopedia, Song Wu killed a tiger. The story in Water Margin mainly tells that Song Wu, a Liangshan hero, went home to visit his brother, passed by Jingyanggang and went to the restaurant to buy eighteen bowls of wine. He was drunk and wanted to go on his way. The restaurant told him that there was a tiger hurting people on the mountain and advised him not to do it. Song Wu didn't believe it, but he saw a big white frontworm hanging on his eyes on the mountain. Song Wu rose up all his life and killed the tiger with his fist, which eliminated a great disaster for the local people. Later, it was passed down as a much-told story by the world. The legendary knight-errant written by Shen Jing in Ming Dynasty was adapted accordingly. Beijing Opera, Kunqu Opera, Gaoqiang Opera, Sichuan Opera, Yunnan Opera and Shaanxi Opera all have this repertoire.

Song Wu (1026- 1055), male, from Qinghe County, Xingtai City, Hebei Province, worked as an artist in Hangzhou, and later served as the head of Gao Quan, the magistrate of Hangzhou. He was promoted to the jurisdiction because of his meritorious service. After the high power was abolished, Song Wu was driven out of the yamen. Song Wu stabbed Cai Yan, the successor of Hangzhou magistrate, and died in prison after being arrested. This Song Wu is the prototype of Song Wu in Four Great Classical Novels's Water Margin.