Yes, and there is a cap.

You may transfer a maximum of $500 per day with just your passport and valid visa.

To transfer more than $500 at one time, you will need to provide the following documents and information to the Chinese bank you are transferring money from:

• Original work contract, plus one copy
• A stamped income certificate provided by the employer's HR or finance department
• A stamped Individual Income Tax statement provided by the local tax bureau
• A copy of the passport ID page and visa page
• The name and headquarters address of the foreign bank you are transferring money to
• The foreign bank's SWIFT code or bank code for foreign wire transfers and the bank's routing number
• Your personal foreign bank account number

You may transfer up to the amount of your income as long as the documents prove you earned the amount through your employment.