Hello.My name is Chen Yifan.I have a friend.His name is Lao Zhang.He is 12 years old.He likes playing ping-pong.So he often plays ping-pong with me.His father is a teacher.He teaches math.He likes playing chess.So he often plays chess with me.Why dose he play chess with me?Let me tell you.Because,I like playing chess, and I play chess very well.His mother is a teacher, too. She teaches Chinese.She likes listening to music.This is my friend.Oh,his telephone number is 86189621.