This is obvious as long as you understand the writing background of this poem.

Creative background: When Su Shi was in prison, he set out with his eldest son Mai Su; Su Shi and Mai Su agreed to send only vegetables and meat, and if they heard bad news, they would change them into fish. Mai Su strictly abided by the agreement for more than a month, which coincided with the shortage of food, so he went to find someone to help him. When he asked a relative to deliver food for him, he forgot to tell his father Su Shi about the agreement. Relatives accidentally got fish (pickled fish) and gave it to him. When Su Shi saw it, he was shocked and thought that the crime was unforgivable. He wanted to plead with the emperor (Song Shenzong, the same below) but had no choice, so he wrote two poems to his brother Su Zhe (. Su Shi also generally expected that the warders were afraid to send letters privately, and later they were really seen by the emperor. Zongshen didn't mean to kill him, but he felt more sympathy for him after seeing this poem, so he was treated leniently. Both poems express their concern for their families, and the first one especially shows the deep affection between brothers and sisters.

Appreciation of works: Su Shi and his younger brother Su Zhe are not only listed as "eight masters in Tang and Song Dynasties" in article creation, but also have deep brotherhood in reality. Do they think that Wei, a poet in the Tang Dynasty, "would rather know the rainy night and sleep in bed"? That poem, meet again another day, retire, sleep in bed and share the joy of seclusion. At this time, Su Shi expected to die, and he could not help feeling his old wish. At the same time, the expectation of "being brothers for the rest of your life and having no career in the next life" is even more touching. The second song, in addition to the entrustment of the afterlife, "dreams are like clouds around deer, and souls are like chickens flying to the fire of life." One of the couplets is remarkable, which is the embodiment of Su Shi's good use of metaphors and an important feature of his poems.

one

The Lord is like the sky, everything is spring, and the little minister dies secretly.

It's even more tiring to pay off debts after a hundred years.

Buried bones are green hills, and rain alone hurts the body.

It is more important to be brothers with you for life.

Secondly,

The frosty night in Baitai is bleak, and the wind is low.

The dream is like a deer around Yunshan, and the soul is like a chicken.

The rhinoceros horn is really my son in my eyes, and the cow behind me is a shame to my wife.

Where do centenarians wander? Tongxiang knows where western Zhejiang is buried.