Why did King Li Huowang destroy Ruth Village?

Because the Baijiaxin cult was captured by officers and men.

In "Strange Fairy", King Li Huowang killed the heroine Bai Jia, because Bai Jiaxin's cult was captured by officers and men, and the fire king went to rescue it. The middle fire king exposed the official identity of the heavenly kingdom, so he was ambushed by the White House, which hated the imperial court.