Hello dear Pangfuan, real friendship and mutual trust develops over a long period. Some who are friendly will actually be against you behind your back. Jealousy is a very destructive trait; never be jealous of others' good fortune. Gossip is part of human nature, never say anything bad about anybody, as it will get back to them. If others are saying bad things about people, never state your agreement as you will be blamed for it. This is my experience, which I share with you dear daughter. Take care always; your Papa loves you very much ❤️