Meteor butterfly sword, a novel by Gu Long.

In the novel, Fa Xiangchuan is the confidant of the old man (Sun Yubo) and grew up beside him. When he was a child, he was very calculating and was regarded as the eldest brother by the old man's daughter Sun Xiaodie. When he grew up, he bullied Fluttershy cruelly and threatened Fluttershy not to tell the truth to the old man. Fluttershy was afraid of becoming the confidant of the old man, took refuge in the enemy or assassinated the old man, so she kept her mouth shut, but she was pregnant. The old man was furious, thinking that Fluttershy had corrupted his family style and expelled Fluttershy.

After being expelled from Fluttershy, Lu Xiangchuan still found Fluttershy, continued to bully her, often beat her when she was drunk, and killed some young people who wanted to be nice to Fluttershy.