"Purple gas came from the east" was first seen in The Legend of the Immortals: According to the Western Zhou Dynasty 2700 years ago, Lao Tzu resigned and went west, and there was a wise doctor named Yin Mingxi, whose word was Gongdu. He studied hard since childhood, made the past serve the present, mastered the calendar, was good at observing astronomy, and also learned astrology, so that he could know the past and see the future. ? When Guan Yinxi saw the purple gas coming from the east, he knew that a saint would pass by. Sure enough, I came riding a green cow.

"Purple gas comes from the east" is an old saying of China. Purple is a composite color of red and blue, which is darker than blue. In the geography and times of our country, the East belongs to Jia Mu, and the spring trees are flourishing. Its colors are blue and purple, which means everything is born and flourishing. The literal interpretation of "purple gas comes from the east" is that purple auspicious clouds come from the east. Purple gas comes from the east.

Purple gas comes from the origin of the east; Liu Hanxiang's Biography of the Fairy Wandering: "I went west, so that I saw the purple gas floating away from the customs, and I passed by Qingniu."

Laozi is knowledgeable and served as an official in charge of books and classics in the Zhou Dynasty. About the time he was in his seventies, there was chaos in the world, and the princes fought for power.

"Purple gas comes from the east" is a great victory in "Laozi Going through the Customs", which has been passed down through the ages.

In 5 16 BC, there was chaos in Zhou Wang, and the vassal states were keen on power struggle, with frequent wars and people in dire straits. I was very disappointed with Zhou Wang's room, so he decided to quit his job and go to the west. When I passed the Hangu Pass, Yin, the guard of the Pass, was a man who was good at observing astronomical phenomena. When he saw a purple gas coming from the east, he thought a saint would come and hurried to meet him. I saw an old man coming slowly on a green cow. This is Lao Zi. This is the origin of the idiom "purple gas comes from the east".