C290 Mermaid Oil
Is Liu Jianyin a good person? Of course not, he was a demon, but a demon also had its own beliefs! That was eating until it was used!
A demon would eat people, but it wouldn't kill people for no reason at all. A demon killing people was either for alchemy or for food!
Sometimes, a Demon King would leave people in his cave to listen to him, or he would lock him up when he couldn't eat him