I don't have enough knowledge to answer your question. I have no idea whether they'd issue you with a temporary driving license. In China this all depends on the mood of the person in authority, and the relationships and connections with the people asking. Sorry to answer in such a wholly and inaccurate way, but this is the nature of Chinese bureaucracy. There may be agencies that specialize in obtaining driving licenses or obtaining temporary ones for tours that can give you a yes or no answer.

If you want to ride totally legally and experience everything China has to offer culturally, there is always the option of Taiwan, but the riding is not as extensive, obviously.