CNNIC, the central registry for .CN, requires documentation to register a .CN domain. To do so please specify your contact type as either an Individual or Enterprise.

If you choose Individual, you will need to provide a photo ID for the .CN registry's audit process. Please note, the registry accepts passport only for the audit if you are not a Chinese citizen.

If you choose Enterprise, you will need to provide photo ID and a copy of your Business License for the .CN registry's audit process.

Please note: the CN registry is very strict with the audit. To pass the audit, the name on the ID or business document must match EXACTLY the name of your contact record, including the language and order.
Common reject reasons are: document is not clear, not full version or important information is covered by watermark.