I received a strange text message saying how are you?

The other party sends a message, hello, you also respond to him politely. Hello, this is a normal reciprocity. If the other party sends you a message, what if it is a friend? Is it rude? The other person will think that you look down on him, but since you think that you are strangers and have nothing to say, don't pay attention to him, but keep paying attention. If the other person is testing you and wants to lay hands on you, that's not good. In any case, don't disclose money, personal information and family members, so as not to hurt yourself and your family.