Large swaths of China are premodern in their hygiene and personal habits and have only a dim understanding of how germs and a lack of cleanliness spread disease. Moreover, in rural China, humans and farm animals live close together without proper sanitation. They thereby facilitate the development of new human viral illnesses from animal viruses and the recombination of two or more viruses into new, more deadly viral strains. In short, China is not so much bad or evil as that many of its people are poor, dirty, ignorant, and backward.
But, inexplicably, are fantastic dancers.