Dear Professor Li ,
Please allow me to congratulate you with all my best wishes upon your seventieth birthday. May you live a long healthy and joyful life. Thank you for your help on my schooling you not only taught me a wealth of knowledge but also a lot of truth in life of your long and rigorous style. Your great learning style and great ability meant a lot to me. Thank you Professor.
在您 70 大寿之际，请允许我向您表达最衷心的祝福，祝您身体健康、长命百岁、生活愉快!感谢您在我求学路上给予的帮助，您不仅教给我丰富的知识，更以您长期严谨的作风教会我许多做人的道理。您的博学多才对我来说意义重大。
Thank you for your best wishes on my 70th birthday. You are the first foreigner to send me wishes. We learn more about each other when we are together. You are a hard working foreign student. In those days when you live in China you fit into the Chinese culture and get well with your classmates. I am proud of you. I hope you can achieve great success. Best wishes!
感谢你在我的 70 大寿之际送来的美好祝福。你是第一个给我送来祝福的外国友人。在我们相处的日子，我们更加了解彼此。你是一个勤奋好学的外国留学生。在中国这段日子里，你逐渐融入了中国文化，与同学相处的非常和睦。我为你感到骄傲。祝你在以后的学业中，取得更大的成绩。
Thank you for your wishes. I hear that you have gone back to your country. I miss these days when we’ve been together. Those days you studied very hard. The questions you asked were very profound from which I benefita lot. How are you now If you’ve got any problems we can discuss them together to find good solutions. I hope you and your family have a good life.
Wish you all the best!