求1篇英语感谢信,急要求：感谢信不少于100字.提示：李青应北京的朋友王兰邀请游览了故宫博物院,颐和园,长城,参观了清华

Dear Wang Lan,
I’m writing this letter to thank you for your invitation to travel to the National Palace Museum,the Summer Palace,the Great Wall,Tsinghua University,Peking University and many other places of interest.It's really a very pleasant jurney and I feel very appreciate.
Faithfully yours,
Li Qing