"The craftsman camps the country, Fang Jiuli, next to the three gates, the country has nine longitudes and nine latitudes, the warp and the nine tracks, the left ancestor and the right society, facing the back city, and the city is a husband. ”
Rail: rutted; Tu: Avenue.
Nine tracks: The width of the main road in the north of the guide is nine tracks.
Husband: 100 acres of land, 100 steps square. (weekly).
During the Spring and Autumn Period and the Warring States Period, the Qi people compiled the "Examination of the Work Record" can be called the earliest "rule" in China, which is not only a craft official book, but also an encyclopedia that records the construction technology of that era. The book describes in detail the technical rules of the 30 types of work (two of which are missing) in the six crafts, showing us the scientific and technological wisdom of ancient China.
The "Craftsman" chapter in the "Examination of the Work". This chapter delves into the three major responsibilities of craftsmen: the first is "building the country", that is, selecting the site, orientation and setting the height of the capital; The second is "Yingguo", that is, planning the layout of the capital, designing the palace, Mingtang, Zongmiao and roads; Finally, there is the "Wei Gou", that is, the planning of the well field system, the design of water conservancy projects and other related buildings. These contents not only reflect the level of social technology at that time, but also reveal the social conditions of the period when the Ida system flourished.
There is a famous text description in the book "Examination of Work": "Fang Jiuli, next to three doors." There are nine warps and nine latitudes in the country, and nine tracks are painted by warp. Left ancestor right society, facing the market. Kazuo Ichijo. This passage succinctly and accurately outlines the blueprint for the royal city: each wall is nine miles long and has three gates; The city is crisscrossed by roads, each wide enough for nine cars to run in parallel; The palace is in the center, with a temple dedicated to ancestors on the left, an altar dedicated to the god of the land on the right, a place for the court meeting in front and a market in the back. The entire court meeting and market area occupies an area of one fu, which is equivalent to an area of 100 paces.
Restoration map of the No. 1 palace of Xianyang Palace in the Qin Dynasty.