Hi,
I have searched the number for you,that is the zip code of Liwan district of Guangzhou. There are nine districts and tow smaller cities in Guangzhou,the Liwan is one of them,as you know there are few hundred thousand of phone numbers in a , district of a city,so could you please tell us what are you exactly looking for,there are so many experts on here on this web on Guangzhou ,maybe we will be helpful for you.
Good luck!

Thank you so very much!! This information has been helpful. I will try to find the Post Office in the Liwan District. Finding phone number to Post Office is always difficult. Thank you, again, and many blessings to you.