It's the main staple in China besides rice and the trade war between the U.S. and China has brought it to the forefront.
Soy milk is the number 1 drink at breakfast in China. Soy oil is used in most stir fries. Tofu in all of its various forms is almost a must at any meal or time of day. And all of these require soybeans, not to mention for animal feed.
China is trying to wean itself off of its dependency on American soybeans but it is not an easy task. In April, the government and its central planners simply required farmers in one particular province to dedicate more land to growing soybeans. We'll see how that goes. Central planning like this does not usually work very well, especially in the long term as the people become dependent upon it for their every move waiting for the "experts" to tell them what to do at every turn. It's also not very efficient for obvisous reasons.
China is importing more and more food and has a gargantuan task of trying to feed itself on land that it has polluted to obscene levels or has destroyed due to economic number worship and has swallowed up with urban sprawl and infamous projects such as ghost towns, etc. It has an eerie feeling as that of Imperial Japan in the lead up to WWII which was ultimately unable to feed itself either and had to look outward for resources at the expense of war.
What we are seeing in the South China Sea with its bullying of the neighbors in that region is evidence of this, including Taiwan, North Korea, India, etc. It knows it has a problem and is turning outward to solve it with the use of brute force and simply theft/lies about historical boundaries, etc.