Wei Zi's perception of heaven and man.

Where immortals live, they are called the Purple Sea, and the clouds that immortals have stepped on are called Ziyun. Since ancient times, there has been a saying that "purple gas comes from the east". The emperor is called "the son of heaven", which is naturally the closest to the immortal, so it is named purple gas, and the whole imperial city is heavily guarded. The word "ban" is not difficult to understand.

? In ancient times, there was a saying that the emperor lived on the purple wall. The emperor was the son of the emperor and naturally corresponded to his residence, hence the name. Ziweiyuan refers to the Polaris, which is located in the middle and surrounded by other stars, which also means that the emperor has the greatest power.

? Ancient astronomers in China once divided the stars in the sky into three constellations, twenty-eight constellations and other constellations. These three walls include Qiu wall, Wei Zi wall and Shi Tian wall. The Wei Zi wall in the middle of the three walls is bright and dazzling, and there are Qiu wall and Shi Tian wall on both sides, so there is a saying that "Wei Zi is in the middle".

? The feudal rulers of China in past dynasties paid attention to the unity and induction between heaven and man, and they all claimed to be "the son of heaven". Since the "son of heaven" lives in the "purple palace" in the sky, then the son of heaven's residence on earth should also be called "purple palace" In addition, the palace where the emperor lived was heavily guarded, and the entrance of the palace was tight, so ordinary people could not go in and out casually, otherwise it would be a "forbidden area". So the "Purple Palace" became the "Forbidden City", which together is the "Forbidden City".

"The Analects of Confucius is for politics" says: "A politician is virtuous, like Beichen, who lives in his place and is surrounded by stars." "Looking at the Elephant and Looking at the Play" says: "Polaris is the most revered star in the sky when it comes to Beichen. Its new star is also the hub of the sky. The sky is infinite, three lights are shining, and the stars are still. Therefore, it is said that' living in its place, the stars are arching the moon'. Therefore, Polaris became the "King Star".

According to ancient myths and legends in China, the "Heaven Emperor" who dominates the universe lives in the Heavenly Palace, which should of course be in the middle of the sky, so the Heavenly Palace should be on the Purple Garden. Therefore, the Heavenly Palace where the Heaven Emperor lives is called the Purple Palace, and "Guang Ya Shi Tian" says: "The Heavenly Palace is called the Purple Palace".

The feudal rulers of China in past dynasties paid attention to the unity and induction between heaven and man, and they all claimed to be "the son of heaven". Since the "son of heaven" lives in the "purple palace" in the sky, then the son of heaven's residence on earth should also be called "purple palace" In addition, the palace where the emperor lived was heavily guarded, and the entrance of the palace was tight, so ordinary people could not go in and out casually, otherwise it would be a "forbidden area". So the "Purple Palace" became the "Forbidden City", which together is the "Forbidden City".