Dear Sir or Madame

Re: your delay schedule to come to China.

Thank you very much for your email.

I understand that, due to the un-foreseen circumstances, you have now postponed your schedule visit to meet us in China.

However, I would like to know that, if you have any plan to come to China again in the future.

Please let me know if you have any change of your schedule as soon as possible.

looking forward to hear from you.

kind regards

your sincerely

xxxxx.

沒那麼多講究，表意清楚就好，也就是你推遲我也恭候。

Dear Mr. XX,

I am sorry to hear that you are unable to visit China on time. There is no problem in delaying it. I have changed my schedule so that I can welcome you here that time. Please tell me as soon as possbile if you change your plan for another time.

Regards

...

譯文：

很遺憾你不能按時抵達中國。推遲幾天沒有任何問題。我已經更改了我的計劃，以便在那時能恭候你。如果你需要再次更改計劃，請儘早通知我。