Why did Hu Sanniang take refuge in Liang Shanbo?

Because she was captured, Zhujiazhuang was later broken, Zhu Hu fled to Hu Jiazhuang, followed by Li Kui jy.

Hu Sanniang's brother wanted to promise his sister to come back, so he arrested Zhu Hu. When Li Kui II entered Hu Jiazhuang, he leveled Hu Jiazhuang, leaving no treasure in the house. Only Hu Sanniang wanted to escape, but later she had no choice but to enter Liangshan.