Interpretation of Dian Fu

1. The ancient system called it an area 500 miles away from the city. "Book Gong Yu": "The surname of Xitu, only Taide is the first, not far from me, 500 Li Feng." Kong Chuan said, "Within a thousand miles, it's called a uniform, and the son of heaven served the farmland and went to the king city for 500 miles." Cai Shenchuan: "Dianfu, the land of Guinea is also ... 500 miles outside the city and 500 miles on all sides." "The Biography of Wang Han": "Official business is the city." Yan Shigu's note: "Yugong went to the king's city for 400 miles and 500, all of which were in service."

2. As one of the "nine clothes", it refers to the area between 500 and 1000 miles away from Wang Ji. "Zhou Li Xia Guanzhi Fang": "Fang Liqian is called Ji Wang, 500 miles away is called Houfu, and 500 miles away is called Dianfu."

3. Generally refers to the place near Beijing. Tang Zhang Qiao's poem "Huashan" reads: "When a temple is clothed, danger binds the gods." "New Five Dynasties History Miscellaneous Biography II Li": "I am afraid that the military situation will suddenly change, and it is difficult to hold military forces, so I will only serve all beings, so I am suffering." Qian Qing Qian Yi's "Yang Yingzhen, the magistrate of Qingxian County, Hejian Prefecture, Zhili Province, awarded Lang system": "I choose officials and care about the people, and I have a unique policy. I can't cover up those who hear it!"