Everything is done with a purpose, and making friends is no exception. The purpose of making friends is different, and the friends you make have different attitudes towards you. A sincere friend will accompany you all your life, and a friend who makes friends for personal interests will give up halfway. Make friends with a purpose, this friend's concept is fragile, and the purpose is achieved, and this friend's usefulness is gone. If you persist in this way, you may achieve many goals, but there are no friends around you. The basis of making friends is sincerity, otherwise it will become naked use and betrayal!