Shiyan, a farmer's market, is located in the middle of China, the northwest of Hubei Province, the east of Qinba Mountain and the middle and upper reaches of Hanjiang River. According to Baidu map, the farmer's market has a corn wholesale market, and the price is very affordable. Corn belongs to the genus Panicum, also known as corn, corn cob, corn, pearl rice, etc. It originated in Central and South America and is an important food crop in the world.