Buy supplementary health insurance
This goes for any international trip: Buy insurance that covers medical emergencies because your regular health insurance, if you have it, is unlikely to work outside your national borders, and it almost certainly will be useless in China. Squaremouth.com and InsureMyTrip.com are two sites where you can plug in the details of your needs so they can deliver options from various insurers that fit the bill. You can’t do this once you’re in China – it must be done from home.
Read the full Frommer’s article online here: https://www.frommers.com/slideshows/848236-do-these-things-before-going-to-china-your-trip-will-go-better