Dear Mr. Zhangsan,

I am writing you just to tell you how very much I appreciate the warm welcome you extended to me last week.

The help and advice you gave me, and the introductions you arranged for me, have resulted in a number of very useful meetings and I should like you to know how very grateful I am for all you have done to make them possible.

I realized the value of time to a busy person like you and this makes me all the more appreciative of the time you so generously gave me.

Yours sincerely,

张山先生：
今特致函谨对上周您给予本人的热烈迎候表示最真挚的谢意。您给予我的帮助和建言以及您为我安排的引见，已经促成了一系列相当有益的商谈。我谨想让您知道，我对您为我所做的一切安排并付诸兑现是多么地万分感激。我深知对于像您这样的大忙人，时间的价值更加尤为宝贵，但您依然如此慷慨拨冗为我奔忙，这尤使我愈加感激不尽。特再次感谢！

此致敬礼