Introduction to the old site: In an area of ​​less than 10 square kilometers, there are the former residence of "Captain of the Trolley Car" Li Jiacai, the War Post Association Memorial Hall, the former site of the Shandong Branch of the Communist Party of China, the former site of the Shandong Column Headquarters, the former site of the Provincial Committee of the Sulu-Henan-Anhui Border Region, Shandong There are more than 30 red relics such as the Anti-Japanese Military and Political Cadre School, the First Branch of the Anti-Japanese University, the Beihai Bank, the Fire Line Bridge, the Battlefield Nursery, the Wartime General Hospital, the Wartime Arsenal, and the Battlefield Supply and Marketing Cooperative, which are typical revolutionary traditions. Educational base.