Most people who have watched Qing Dynasty film and television dramas are very familiar with the title of "Zhongtang", and He yan, Liu Yong, Li Hongzhang, etc. are called "Zhongtang", which shows that Zhongtang is not a mediocre person who can be worthy, they all have a common identity, that is, cabinet university scholars, who were Zhengyipin officials during the Qing Dynasty, so they are called Zhongtang.
In retrospective of the history of the title of Zhongtang, there is also a close relationship with the prime minister. The title of Zhongtang began during the Tang Dynasty. As we all know, during the Tang Dynasty, the "three provinces and six ministries system" was implemented, of which the six parts were naturally very familiar to everyone.
The Middle Hall was named after the Zai Chancellor's office in Zhongshu Province, and was later called the Zai Xiang as the Middle Hall. During the Tang and Song dynasties, the chancellor was generally referred to as the Middle Hall. During the Ming and Qing dynasties, university scholars were often called Zhongtang.