I think cruise lines bring mass infections on themselves with their never ending focus on building bigger and bigger ships, cramming more and more people into what is basically a limited space. There's no refunds on the multi-thousand dollar cruise fare for self-isolating so I'm not surprised people don't self-isolate. (Did you? I didn't when I got a cough onboard recently, I coughed into a tissue or if caught short into my elbow, not into my hands). Even when they concede that an illness has been caused onboard, the cruise lines will try and get away with a 'future cruise voucher' instead of even a partial refund.
To answer the OP's question, no I wouldn't be planning to go to China in the foreseeable future, nor for that matter anywhere else until the global hysteria has settled down and we know more facts about the virus, how it's spread and how dangerous it actually is.