9:00-5:00 According to the treasure of Heshan District Library, the business hours of Heshan District Library are 9:00-5:00. Heshan District, belonging to Yiyang City, Hunan Province, is located in the north of central Hunan, bordering Dongting Lake, Xiangyin and Wangcheng in the east, Ningxiang in the south, Taojiang in the west and Zishui in the north. The southwest of the area is the remnant vein of Xuefeng Mountain, and the highest point in Biyun Peak is 502 meters above sea level. The middle part of the ground fluctuates gently, and hills and plains alternate; The northeast is the lakeside plain, with flat and open terrain, contiguous cultivated land and fertile soil, which is the agricultural product base of the whole region.