There are thousands of Tang poems, which poem is the first of the seven laws?

I remember watching Joy of Life, in which Fan Xian, the hero, thought that Du Fu's ascent to the heights was the first of the seven laws, and so did I.

Du Fu's Ascending the Height is regarded as the first of the seven laws. The specific reasons are as follows:

Mountain climbing: In the sharp wind from the vast sky, apes are sobbing, and birds fly home on the clear lake and white sand beach. The endless trees are rustling leaves, and the Yangtze River is rolling unpredictably. Li in the sad autumn scenery, a wanderer all the year round, lives alone on the high platform in today's illness. After all the hardships and hatred, the white hair is full, and the wine glasses are damaged.

Climbing to the Top is a seven-meter poem written by Du Fu in Kuizhou in the autumn of the second year of Dali (767). The whole poem tells the poet's complex feelings of wandering, old illness and loneliness for many years through mountaineering, which is impassioned and touching.

The first four sentences of this poem are about climbing mountains. The first couplet is right. Focusing on the specific environment of Kuizhou, the poet used the word "wind rush" to drive the All-China Federation, and from the very beginning, he wrote a quatrain that was told for generations. The poet moved his eyes from the heights to the rivers and lakes, and on the background of clear water and white sand, he was dotted with birds dancing with the wind and never looking back. This is really a beautiful painting. Among them, the sky, wind, sand, Zhu, apes whistling and birds flying are all made in heaven and naturally paired. Not only the upper and lower sentences are correct, but also the sentences are self-correct, such as the above sentence "day" to "wind" and "height" to "urgency"; The next sentences "sand" versus "Zhu" and "white" versus "green" are full of rhythm.

This couplet embodies the typical characteristics of Kuizhou in autumn. Poets write about landscapes and express their deep feelings, but also invisibly convey the feeling that youth is fleeting and ambition is hard to pay.

Poets in the United States have experienced ups and downs, worrying about the country and the people, and their hair is getting gray. In addition, because of illness and alcohol deprivation, it is more difficult for them to let go of their sadness.

This poem can be called Du Fu's most "showy" poem. Sentences full of antithesis are natural and steady, which bring the antithesis of orthographic poetry to the extreme. Some people commented on this poem "every sentence is regular, every sentence is regular".

Perfect rhythm and perfect emotion blend together. It can be called the eternal quatrain, so it is considered that climbing is the first of the seven laws.