Dear Mrs. Zhang,

      Thank you so much for receiving me, a participant of the English speech competition, during my visit to Peking University. Your considerate and warm reception made me feel at home. You kindly provided comfortable lodging and delicious regional snacks, assisting me to get over the cultural difference and, more importantly, help me better prepared for the activity. Your well-organized competition left me a great impression and I had a great time there. I really appreciate everything you have done.

      Additionally, I highly welcome you to visit our University in due course so that I can repay your hospitality. I promise you a fantastic visit, through which you may gain a deep insight of our campus culture. Hope to get your earlier reply.

                                                Yours,

                                          Zhang Wei

（假装是手写的，所以落款在右边）