What if my daughter falls in love with an old man?

Let the old man transfer his property to his daughter. If the old man refuses, you can take the opportunity to say that the old man doesn't really love your daughter. Pick it out. If the old man wants to, then you can put it down. A man is willing to give up all his property for your daughter. Why do you ask so much? It is really the same age, and it is not necessarily good for your daughter.