Is medical exam needs for a tourist visa going to china?

I am a nanny of a toddler of a chinese family. They bringing me with them to china for a vacation at the end of the year. Is medical exam required for a tourist L? We went to HongKong this year it didnt need medical exam. My employer are chinese born. What type is applicable for me in my situation? Thanks in advance for helping me. I am confused. Please help me.