กก The Second Gate was founded in 1909. In May of that year, the Qing dynasty government approved the application from the Department of Foreign Affairs to establish a graduate school in the suburbs of Beijing. Tsinghua Yuan was chosen as the site for the school, and construction started in August. Mr. Zhou Ziqi, governor of the Office of Overseas Studies, was in charge of the project. The first step was to build a wall surrounding the campus, and the main gate of the school. In 1933, in the wake of the extension of the dwelling place, the former enclosing wall was moved to the outer place, and in this way, a new gate came into being (now Tsinghua's West Gate). Ever since, the original gate has been called the Second Gate.

กก At that time, the Second Gate was not only stately and graceful, but also heavily guarded. In those years, underclassmen were not allowed to go through the gate without permission from the school authority. In addition, for the sake of preserving the sanctity of the learning environment, people not on official school business were forbidden to pass through the gate.

กก The original Second Gate was connected by low walls to the former post office in the east and the original guard post in the west. In the late 1950s, in a move to open up transportation routes through campus, most of the low walls were torn down with only the central part left. In spite of that, the gate still retained its impressive appearance. During the Cultural Revolution, the Second Gate was demolished. The new Second Gate was built with funding from the Tsinghua class of 1991.