Sitting on the ground and walking for 80,000 days: the diameter of the earth is about12,500 kilometers. If you multiply it by pi 3. 14 16, you get about 40,000 kilometers, which is 80,000 miles. This is the mileage of the earth's rotation (that is, one day).
Looking at thousands of rivers: The earth runs in the sky of the universe, and people sitting on the earth look at the sky, which is equivalent to traveling in the universe and seeing countless galaxies like the Milky Way.
Sky survey means that our solar system (including the earth) passes through the Milky Way every day and hour. The Milky Way is a river, and the river is infinite. "One thousand" is just a lot of words. We humans just' cruise' in a river, but we can see countless things.
Extended data
Farewell, plague
Author: Mao Zedong
There are many green mountains and green waters, but Hua Tuo has no choice but to be an ant!
Thousands of people in Ficus pumila lost their lives, and thousands of families sang songs.
Sitting on the ground, traveling 80 thousand miles a day, watching the sky and thousands of rivers.
Cowherd wants to ask about athel Loren, and he is equally sad.
Interpretation: The south of the motherland has always been known as the land of fish and rice, with green mountains and green waters and beautiful scenery. However, a small schistosomiasis japonica has dimmed the killing of great rivers and mountains, and even a famous doctor like Hua Tuo is helpless.
"Sitting on the ground and traveling 80,000 miles a day, patrolling the sky and looking at thousands of rivers" expressed the strong voice of the people for disaster relief. With the rotation and revolution of the earth, people searched the sky and saw countless galaxies. However, year after year, the tragic situation remains the same, and the suffering remains the same. Where can people find a savior who can help them get rid of the disease and destroy Wen Jun?
"Cowherd wants to ask about the plague, and he is both sad and happy." Cowherd is the embodiment of working people. Of course, he cares about the sufferings of the people and asks about the "things" of "God of plague". How to answer? The poet's answer is: all joys and sorrows have become the past with the passage of time.