Wu Song - in Jin Ping Mei

In Jin Ping Mei

The beginning is roughly the same as Water Margin. After his sister-in-law murdered his brother, he wanted to take revenge. At first, he tried to kill Ximen Qing, the lover of his sister-in-law, but he killed the wrong person instead. He was exiled to Mengzhou. He came back later, but Ximen Qing had already died of sickness. He then killed his sister-in-law, and fled to Mount Twin Dragons.

While Jin Ping Mei is famous in its sexually explicit content, there is nothing sexual about Wu Song in the novel.