Nine o'clock in the evening. According to check the business information of Nanyang Longda Trade City, it is known that the business hours of Nanyang Longda Trade City are from 9:00 am to 9:00 pm, and it closes at 9:00 pm every night. Nanyang Zhongjing Trade City is a large-scale comprehensive wholesale market integrating side dishes, department stores, stationery, candy, grain and oil, and catering.