Mail 10086 cn

You're referring to the postal code for China!

The postal code "10086" is a special code in China that is used for sending mail and packages to the China Post's central office in Beijing. It's not a specific address, but rather a code that allows mail to be routed to the central post office.

If you want to send mail to China, you can use the following format:

[Recipient's Name] [Street Address or PO Box] [City] [Postal Code] [China]

For example:

John Smith No. 1, Beijing Street Beijing 10086 China

Note that the postal code "10086" is only used for mail sent to the China Post's central office in Beijing. If you're sending mail to a specific city or province in China, you'll need to use the correct postal code for that location.