China does more CORN, RICE, WHEAT - higher productivity grains = 4tonnes to 6 tonnes production per hectare.
and imports Soya Beans!
HECK! we can produce more POTATOES - 20+ tonnes per hectare!
and reduce RICE production - increase CORN PRODUCTION.
AND if we develop the LAKE SIDE rains - man made "salt water lakes" - we get more FRESH WATER in Xinjiang, Inner Mongolia - to grow even more CORN, COARSE grains, WHEAT.
China could just "increase grain production" to 600 to 700 million tonnes of food and coarse grains!
We can import SOYA BEAN from Brazil (with 70 million hectares of unused arable land) and Argentina beside the USA!