If the poet stops there, he just shows the world a picture, and that is silence. Perhaps, this poem can only be famous for a while, and will soon be lost in the storm of history. The genius of the poet lies in that he is not addicted to the beautiful scenery in front of him, but arouses deep meditation on the bright moon and the eternal universe. "Who is watching the moon by the river, according to the moon at the beginning of the year. Life is endless, and the moon on the river is only similar every year. " Just like the bright moon in the river will never change, the poet's heart is crystal clear and fragile. They often find beauty easily, and they associate beauty with the shortness of life and the ruthlessness of years. They think of Li Bai's poem "Today, people don't see Gu Yue, but this month, they took photos of the ancients", a poet with elegant and unrestrained temperament. When facing the bright moon and nature, his heart is inevitably a little lonely. I think of Su Shi's "Former Red Cliff Fu", the representative leader of the wild school and the down-and-out person in the officialdom, but in the smallness of man and nature, they get a kind of relief and comfort. 4 parts of ammonia water, 4 parts of sodium carbonate, 2 parts of refined white soap, 4 parts of alcohol and 0/00 part of water with the concentration of 10% can be used.