Japanese come to China "visa-free". Why do Japanese people need to go to China?

First of all, there are too many people in need of help, which is also the main problem of not being exempted from visas. No country in the world can easily grant visa-free access to China, especially Japan, South Korea and even Hong Kong and Macao. If China is granted visa-free, the number of tourists will exceed their acceptable limit. Followed by income level. In other words, the smaller the population and the higher the income, the more countries can be exempted from visas.