Introduction to the old site: The old site is a four-in-one courtyard. The small building on the north is the office of the Eighth Route Army Headquarters and Staff Office. On the east side are the Operations Section, the Confidentiality Section, the Communications Section and the Mapping Room. , on the west side are General Peng's office, secretariat, guard room, and information department, and in the south are Tengdai Yuansu's office and management department.