China has only 10% of the world's arable land yet produces a quarter of the global grain output and leads the planet in the production of cereals, cotton, fruit, vegetables, meat, poultry, eggs, and fishery products, according to FAO. [0]
China is more than 100% self sufficient on essential food (rice and other grains). China does import a large amount of soybean for fodder. If anything, I think Chinese eat too much nowadys and become as wasteful in food as Americans. When I visit China, I don't like the fact that many families have pets (dog, cat, and etc) just like here in US.
[0]https://www.fao.org/china/fao-in-china/china-at-a-glance/en