You should not be cancelling your tickets. Thailand has a couple of cases as well and they are not as well equipped.
I’m planning to go to Wuhan. I heard it’s lovely
So, you really want to visit virus hotspot region right now? I can say for sure that South Asian or Southeast Asian countries won't have too good equipment or knowledge to fight against corona.
East Asia has the most knowledge and technology in Asia, but they also to have the most cases.