Dear Mr. Paul,
My name is Hua Li. I am happy to inform you that there be an activity held by our English club. The activity will begin in the afternnon this Saturday, and the location is the school library. There are totally three topics for communication. The first one is "Campus life of Chinese and American studens", and the second one is "Ourdoor activities that Chinese and American teenagers like" and the last one is "Festivals we interested in". We are expecting to you to come.
Sincerely
Hua Li