Why did Kublai Khan skew the central axis of the city? Isn't it beautiful?

Kublai Khan's axis in the city was crooked for a week because he developed from Mongolia, and he thought that the geomantic omen in Mongolia was also better. Another reason why the central axis inclines to Mongolia is that Kublai Khan has the capital Beijing and the ancient capital of Mongolia, so Kublai Khan naturally hopes that the two will be unified.

Many ancient buildings will have a central axis, which should coincide with the meridian. But I found that the central axis on the map of Beijing is crooked. Theoretically, the central axis should divide these buildings in two, but the counterclockwise direction is a bit crooked.

This central axis just passes through the dragon chair, so the central axis is crooked, and so is the dragon chair. But Kublai Khan wanted to bend the central axis of the city for some reason. The central axis leans westward because of geomantic omen. It turned out that Kublai Khan grew up in Mongolian grassland and later moved to Beijing. He felt that since his hometown was in Mongolia, it was natural that the geomantic omen in Mongolia was better, so he aimed the central axis at Mongolia. Among them, Kublai Khan also has a strong will, that is, he hopes to achieve the unity of the two, so he will do so.

When Kublai Khan arrived in Beijing, he felt that the summer in Beijing was very sultry, which made Kublai Khan, a Mongolian, unbearable. In Mongolia, Kublai Khan still has a capital, so every year Kublai Khan will go to that capital of Mongolia for summer and come back in winter. The name of Mongolia is Yuanshangdu, which is Xiadu, and that of Beijing is Yuandadu.