What are the requirements for a working visa if you are going to China as English tutor?

The required documents are as follows:
1. The filled-out application form attached with a passport-style photo taken recently
2. Your passport and copy of its data page
3. The work permit and invitation letter of duly authorized unit (your employer will get the two documents for you)
4. Proof of your financial standing (if it’s the first time you apply)
5. Other relevant materials the consular officers consider necessary