Mao Zedong's "Seven Rules: Farewell to the God of Plague" Sitting on the ground, patrolling the sky, and the Cowherd: Mao Zedong's letter to Zhou Shizhao on August 25, 1958, "Sitting on the ground and traveling eighty thousand miles a day, Jiang Zhuru (Mao in My classmate at Hunan First Normal University is wrong. There is data. The diameter of the earth is about 12,500 kilometers. Multiplied by the pi ratio of 3.1416, we get about 40,000 kilometers, or 80,000 miles. This is the mileage of the earth's rotation (that is, one day). Taking a train, ship, or car requires paying a price, which is called travel.
Traveling on the earth without paying a price (that is, without buying a ticket) can cost 80,000 yuan a day. I asked people if this was a trip, and they said no, I didn’t move at all. It’s really unreasonable! Due to the limitations of customs and superstition, many people think it’s strange to survey the sky (the earth). The Milky Way is one river, and the rivers are infinite. We humans are just "cruising" in one river, and there are countless rivers. People from Langjin were suffering from schistosomiasis, a common name for bulging disease, which was frequently reported in books during the Zhou, Qin and Han dynasties. Niulang naturally cared about his fellow villagers and wanted to ask the plague god how the situation was. Belongs to the Milky Way."
Excellent Shun Yao: "Mencius Tells the World", "Everyone can be Shun Yao."
Red Rain: "Peach Blossoms Fall Like Red Rain" in Li He's "Jinjinjiu".
Three rivers: Yellow River, Huaihe River, and Luohe River, generally refers to rivers.