What is the central sentence of the water tune song? What thoughts and feelings did the author express?

Central sentence: I hope people live a long life. This word is Su Shi's masterpiece in the heyday of his creation. The whole poem is hearty and catchy, and it is a rare masterpiece in the poems about the moon. In the ninth year of Xining (1076), Su Shi has known Mizhou for two years. At that time, Su Zhe was in qi zhou. Su Shi and his guests went to Chaoran Terrace for drinking and enjoying the moon (see Su Shi's Poems, Volume 14, Preface to He Lv's Confucius and Two Poems). They drank all night and were in high spirits. They sang at the full moon, vividly showing the "Poxian" people's escape from reality and deep thinking about life. Before the poem, they wrote "drunk, drunk". It's refreshing The artistic conception of ci is obviously influenced by Li Bai's poems, but there are new discoveries. The phrase "When will there be a bright moon?" Adapted from When Will the Bright Moon Come by Li Bai. At the same time, I secretly used the poem "The bright moon shines on the mirror and the smoke is extinguished". "I will meet this lover tonight" is the meaning in the title of the Book of Songs. Praise and appreciation are beyond words, and the poet's charm and natural spirit are also in this title. Then the poet pretends to be a fairy and wants to "go home by the wind", which is even more ethereal than Li Bai's "drinking for the moon". "I sing the poem. The moon encourages me and I dance. After My Shadow Falls, in Li Bai's Drinking the Bright Moon Alone, it borrows the free and easy images and clear artistic conception in Li Bai's poems, abandons the lonely and confused mood of the original poem, and expresses Su Shi's spiritual outlook of flying high, but stepping on the earth and loving life. Beautiful buildings and the Moon Palace are well-known myths and legends, which are used by poets to express the "joy" of autumn night. Not only wrote "Huan", but also wrote "drunk". The next film was about homesickness, but I still made "The Moon" and my mood turned a little low. "I turned to Zhuge and stayed awake." The moonlight flowed and I didn't sleep. Su Shi and Su Zhe are brother and sister. When Su Shi delivered his verdict in Hangzhou, he said, "Please be my brother." I feel homesick, and I can't help myself. Perilla, a "sleepless person" who has been drinking with guests for a long time, also refers to the "sleepless person" who is homesick for the moonlight tonight in this world. How many wandering wanderers will toss and turn in the moonlight and worry about it! When the moon is round and people are not, Perilla can't help complaining: "There should be no hate. Why do you want to be round when you leave? " The moon shouldn't have any resentment against the world, should it? However, why do people always get together when they leave? It seems to be deliberately embarrassing. This issue is tactfully sincere and has a unique experience, which shows people's deep concern. The three sentences of "people have joys and sorrows" are reversed, and the lyrics are ups and downs. Poets are rational and complacent about their unique broadmindedness. Since everything between heaven and earth is not perfect, it is natural to finally say, "I wish people a long time and take the road of Wan Li". As long as "people have been together for a long time", although we are not together today, there will always be a day of reunion. At this time, when the mood is open, the light of the full moon seems clearer and more lovely. The words are imaginative, romantic, vigorous and vivid, and the image is free and easy. It makes people climb high and look far, and hold their heads high and sing high "(Hu Yin's Preface to the Wine Side). Its broad and vigorous style is quite different from the graceful and restrained style of Huajian and Jingu. It is refreshing to read Dongpo's bold and unconstrained ci style. But what is more enlightening and meaningful is Su Shi's wise thinking on life and physics. There are countless in the universe, nature and life. Affection is mutual affinity, dependence and love, and emotions are separated; Time is infinite and life is short; It's hard to believe this opportunity ... the world is so beautiful and wonderfully mixed with regrets, so there are so many poems that cherish the spring and mourn the old age. Throughout the ages, how many people with lofty ideals and philosophers are aggrieved by this kind of life defect; How many poets and poets are puzzled and frustrated by this kind of life defect? Years have passed, and now it's Dongpo's turn. However, he "fought for the ambition of the present age", but he didn't agree with Wang Anshi's political views, so he had to find a job outside, and he hated that his ambition could not be rewarded. In the Mid-Autumn Festival, brothers are in Qilu, face to face, but they can't meet each other. This is the pain that families can't get together. After years of confusion, life is short and fleeting. So there are so many ups and downs of emotions and thoughts in his poems. But he never fell into sadness and depression. He stood on a higher level, opened his eyes and used ancient and modern reasons to resolve his depression. "People have joys and sorrows, and the moon is full of ups and downs. It is difficult to be complete in ancient times." Although people have the pain of parting, the moon is not always reunion. Everything is beautiful and lacking, always in an irresistible cycle. Then, "I hope people will live for a long time and be beautiful thousands of miles away" goes beyond the limitations of time, space and region. "There is a * * * bright moon thousands of miles away" (Xie Zhuang Yuefu), and * * * enjoying the moon means that both sides are alive and missing each other, which is enough to make people feel lucky and gratified. Su Shi's self-satisfaction and self-liberation reflect his thinking on life philosophy. In addition, he is also good at combining some mysterious theories of Buddhism and the old with Confucianism to deal with the problems of travel, origin and advance and retreat in Tibet. When dealing with setbacks in life and career, China's scholar-officials generally follow two paths: either give up their ideals and go with the flow; Or stick to your ideals and know that you can't do it, even if you hit a wall or even die in the line of duty. Su Shi took the third road with his unique world outlook and outlook on life. He didn't give up his ideals, colluded with the secular world and fought fiercely, but listened to nature and tried to be detached. His career was frustrated. He took the sentence "When you give up your house and hide in me, why don't you look at your leisure place?" And fight first "("Qinyuanchun, go to Michigan early, send the child immediately "). The world is endless, and life is short. He is proud of enjoying the cool breeze and bright moon, and enjoys himself in the process of sending love mountains and rivers to blend with things and me. When his relatives were separated, he forgave his blessing with "I wish others a long time, thousands of miles away * * *" ... Like nearly a thousand years ago, he effectively maintained inner peace, optimism and cheerfulness throughout his life, and reached the realm of life that many people yearned for but could not get. This is Su Shi, and this is the unique artistic charm of Shuidiao.