For example, African swine fever has destroyed the animal husbandry industry chain, the number of live pigs has been greatly reduced, the price of pork has risen, the stock of soybean meal has increased, the market has obviously weakened, and the market short-selling sentiment has spread. There are also supply and demand factors at home and abroad. Due to the trade war between China and the United States, soybean meal could not be exported, which led to an increase in inventory and a weakening of the market.