Introduction to the Memorial Hall for the Annihilation War in the Chenguanzhuang Area during the Battle of Huaihai: Behind the monument is the Memorial Hall for the Annihilation War in the Chenguanzhuang Area during the Battle of Huaihai. It was designed by the Architectural Design and Research Institute of Southeast University and completed in 2009. There are three floors on the ground and one underground floor, with a construction area of 9162 square meters.