Time Travel Part One Accidentally Became a Son-In-Law

I thought that after traveling back in time, I could make a lot of money using the knowledge of future generations to save my mother who was suffering from cancer, but in the end I discovered that history had quietly changed. When Li Dahai was deep in despair, a girl as bright as light appeared in front of him. She said, "Are you a good friend? The kind of wife who is going to marry into your wife. I will treat your aunt's disease!" Li Dahai burst into tears with a smile: "Okay!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.