My first article on China (30 years ago?) addressed the question of whether China could produce enough food to feed its large population. The fields I visited were very poor and highly contaminated with industrial pollution. I was shocked by the primitive wood water wheel pump, a noria ناعورة, like pictured on Pharaonic tombs, and the state of the crops. In Yunnan, I saw people tending one miserable plant of corn in the depression of a stone and saw the use of black industrial waste as fertilizer. I took pictures and told the magistrates I met, like the vice major of Tientsin. People told me that the local rice was bitter and they sold it and consumed rice from other provinces.
Reading today's paper, I see that the issue remained with China's fast development, and China apparently had given up on the quest for self-sufficiency. Their strategy is the importation of foodstuffs on a massive scale.
"Lin said the Chinese leadership’s emphasis on diversifying food sources, along with consumer demand for diverse and upgraded diets, has also contributed to increased imports.