1, Eight Poems of "Five Poems of Autumn Prosperity" by Du Fu in Tang Dynasty: Looking at Yaochi in the west, the Queen Mother descending, and the East is full of purple.
Looking at Yaochi in the west, it is suspected that the Queen Mother has visited the world, and the auspicious purple from the East permeates Hanguguan.
2. In Ming Dynasty, Feng presented the hermit and Shi Yun in Mananzhuang: the language of Yaoyao is open, and the purple gas comes from the east.
The beautiful jade ganoderma lucidum shines, the cave door of seclusion opens, and the thick purple gas wafts from the east.
3. Hu Kui's "Send Xuqian Lake to Ganzhou" at the end of Yuan Dynasty and the beginning of Ming Dynasty: Kunlun reaches the Yellow River in the west, and Hanguguan is purple in the east.
Kunlun is far from the Yellow River in the west, and Hanguguan is purple in the east.
4. Liu Xiang's Biography of Immortals in the Western Han Dynasty: I traveled westward, making the yin see purple and floating customs, but Lao Zi passed by.
I went west and went through customs in Hangu, so that Yin could see the purple gas coming from the east and knew that saints would pass by. Sure enough, I came riding a green cow.
5. The list of gods in Ming Dynasty: Zi Qi came to Wan Li in the east, and the letter spread for 5,000 years.
Purple gas came to Wan Li from the east, and Hangu Pass has a history of 5,000 years.