Introduction to the Admiral's Office of the Beiyang Navy: The Admiral's Office of the Beiyang Navy was built in 1887, covering an area of ​​17,000 square meters. It is also known as the "Navy Yamen" and is the command center of the Beiyang Navy. At that time, the Admiral of the Beiyang Navy, Ding Ruchang, planned and commanded the military here. matters.