A sharp knife in the snow. Hehe, why did the girl kill Xu Fengnian?

In A Sword in the Snow, the girl killed Xu Fengnian just because she wanted him to die comfortably in her own hands.

Hehe, the girl's name is Xu Fengnian, because she is always smiling. Her real name is Jia Jia, and she is the adopted daughter of the Huang family. Her life experience is relatively poor. Her mother got help from Xu Fengnian when she was young. She shouldn't have killed Xu Fengnian. The fact is that when Xu Fengnian is in danger, the girl will help.

Hehe, the girl first appeared in the reeds, and the 1 1 th girl in the world was going to hit someone else in Xu Fengnian. When everyone had no time to save her, a plain hand directly pierced the chest of the girl 1 1, and she left after saving Xu Fengnian's life. When sharping A appeared again, the girl appeared again and showed Xu Fengnian her skills, but the next moment she killed her three times in a row until she knew that the sword god appeared and forced her back.

So people are puzzled by Hehe girl. What does she want? Does she really do things with money as she says? To tell the truth, Xu Fengnian's life span can exceed 1200, so Hehe girl will never kill Xu Fengnian for it. The reason is that Hehe girl's teacher, Huang Sanjia, thinks that Xu Fengnian's life is not good, so Hehe girl wants to give him a relaxed ending, but she can hurt Xu Fengnian badly.