Not much. Shandong Hanhai Book Industry Co., Ltd. is a company specializing in supplementary books for junior and senior high schools. It is a standardized and modern cultural and educational development institution integrating book planning, publishing and distribution, with less overtime and normal holidays. Binzhou is a prefecture-level city under the jurisdiction of Shandong Province, located in the north of Shandong, the east of North China Plain and the hinterland of the Yellow River Delta. Located in the overlapping zone of Yellow River Delta Efficient Ecological Economic Zone, Shandong Peninsula Blue Economic Zone, Bohai Economic Zone and Jinan Metropolitan Area, it is the north gate of Shandong.