Dear Prof. Yan,
Your support and your hospitality still amaze me. I thank you for them, and will do my best to remember the lessons you have taught me about respecting and encouraging others. You didn't say one word about such things, but you showed the meaning of the words by your actions. Once again, thank you.
I think you will be receiving a message from Prof. Zhu Zhichang about difficulties in communicating with Prof, Zhang Huaxia. He seems to have his spam filter set to reject most e-mails from the United States, and also from the United Kingdom. Perhaps your computer experts can help him remedy this problem.
I look forward to seeing some of your students, and perhaps you and other faculty, at the CSG meeting in Minneapolis, Minnesota, next July. Our group is small and has no outside resources, but I think we can do a little better than last time in showing you our appreciation for the time and effort you have given to us.
Best regards,
Bill Powers