Good thread. Only two suggestions/comments from me.

Changing currency has been mentioned, but dont forget that ATM cards from home can be used in China. There may not be a need to carry any foreign currency, and using ATM machines may be an easy route to changing your money to RMB.

Enjoy China. But not too much. Use the free time constructively and avoid becoming a 'stuck in China' teacher. With light schedules and free time, China is the perfect place to start or continue your studies, earn a BA, or an MA Tesol. If you already have all the academic qualifications you are ever likely to need, then use the time to learn something else. Make the free time count, and then when the time comes to move on, you'll probably find a new job easier.