Dear Jane,
Congratulations on your passing all the exams. I feel extremely proud of you for your continuous and tireless hardworking and your great progress afterwards. Also, I'd like to thank you for your helping me with my English during these days.
Concerning your returning to the US, we're going to organize a farewell party for you. It's scheduled at 6 p.m. on the coming Saturday at Room 302 of The Sun Club, where we'll have dinner before the party. In case you don't know the way, you could come directly from your hotel by Bus No. 332.
I wish you success and fulfillment in the years ahead!
Yours faithfully,
Li Hu