Why did the kings of the Song Dynasty wear red clothes, and why did the yellow, the symbol of "imperial power", disappear?

I believe everyone has the impression that all the emperors in the world wear yellow clothes. Only the royal family can wear yellow, which is a symbol of imperial power. In fact, not all emperors wear yellow clothes, some emperors like to wear black, and some emperors like to wear red. Kings in the Song Dynasty like to wear red clothes. In fact, the reason why the king of the Song Dynasty liked to wear red clothes was because the dyeing technology of the Song Dynasty was further developed, so he could dye red cloth at that time, so he developed red.

Let's start with the history of the color of the emperor's clothes. As early as the Shang dynasty, because there was? The mysterious bird of destiny, born in business? It is said that the mystery is black, so people at that time liked it, and many things of officials were related to it. However, the dyeing technology at that time was relatively backward, and people could not dye black at all, but only cyan, which was similar to black, but this did not affect people's love for black.

By the Qin Dynasty, dyeing technology was further developed, and people could dye real black. Because they have always loved black, when black cloth was produced, it was quickly loved by dignitaries. In some film and television works, we can see that the clothes of Qin officials are black, which is actually the correct dress.

The pursuit of black continued until the Wei, Jin, Southern and Northern Dynasties, until the dyeing technology of Han Dynasty made great progress again, and yellow cloth could be dyed. At that time, Emperor Wen of the Han Dynasty especially liked yellow clothes, that is, from then on, yellow clothes gradually developed. Until the Tang Dynasty, Li Yuan especially liked yellow clothes. He directly made a rule that only yellow rooms can wear yellow clothes. Since then, yellow has become a symbol of imperial power.

In the Song Dynasty, dyeing technology developed again, and red cloth could be dyed. In a short time, the red skirt entered the royal field of vision and was loved by the royal family. Since Song Taizong, the emperor's robes have changed from yellow to red.

It should be understood that what kind of color the emperor likes is mainly determined by dyeing technology. He likes the new and hates the old. Naturally, he likes new colors.