If the direction of the central axis is not due south and north, doesn't it mean that the emperor's dragon chair is sitting askew?

Whether this ancient man found it may need textual research, but according to the ancient people's idea, if the point is really wrong, these emperors' dragon chairs can really sit askew.

We must first know what the central axis is. The existing central axis is located in Beijing, which was determined when the Yuan Dynasty built the city. It was planned by Liu, an important minister of the Yuan Dynasty at that time, and has not changed since the Ming and Qing Dynasties.

Now the Forbidden City, the largest palace in the world, is really built according to the central axis, and the Dragon Chair, one of the symbols of imperial power, is located on the central axis.

As for the problem of finding the pointing deviation of the central axis, it has only been determined in recent years. In 2004, Mr. Kui Zhongyu mistakenly discovered the deviation of the central axis in order to design an accurate flight route for aerial photography of Beijing's central axis building, but as early as the 1950s, some people questioned it, but no one really practiced and surveyed it. After some textual research, the old man said that this could never be the technical reason of the ancients at that time, because not only Liu, but also Guo Shoujing and other famous artists. It is impossible to make mistakes in angle measurement, and the angle measurement technology was quite mature in the Tang Dynasty.

As for why the central axis points due south and due north, it is natural to find it from the source. Kublai Khan moved the capital, which was then called Dadu. Kublai Khan may be homesick, or in order to avoid the cold, he implemented the "governor system of both capitals." To this end, some aspects of building the capital must respect the wishes of others, and professionals must obey them. Therefore, it is very likely that the mistake of the central axis is to connect the two capitals. If the boss doesn't care, the subordinates will be fine.