How does the whole poem "A Millet Sowed in Spring" express the author's feelings?

[Tang] Li Shen

In spring, as long as you sow a seed, you can harvest a lot of food in autumn. There is no waste of heaven and earth, and the toiling peasants are still starving to death.

Li Shen (772-846), Han nationality, was born in Qiao County, Bozhou in the Tang Dynasty. At the age of 27, he was admitted to middle school and became a teaching assistant.

Translation:

In spring, farmers can plant millet and harvest a lot of grain in autumn. Although all the land in this country is cultivated by farmers, farmers still starve to death because all their food has been taken away by officials.

This is a poem that exposes social injustice and sympathizes with farmers' sufferings, focusing on the cruel exploitation suffered by farmers in the old society. In the first and second sentences, "a drop in the spring and 10,000 kinds in the autumn harvest", the use of "spring planting" and "autumn harvest" can roughly describe farmers' labor. From "one millet" to "10,000 seeds", the scene of bumper harvest is vividly written. The third sentence, "There are no idle fields in the four seas", even states that all the land in the country has been reclaimed, and there is no idle field. The semantics of this sentence and the first two sentences complement each other, thus showing a fruitful and fruitful scene everywhere. The working people have worked hard to create such great wealth. Is it reasonable to have plenty of food and clothing in a bumper harvest year? Who knows that sentence is "that farmer still starved to death." This is really shocking! The word "Jude" is thought-provoking: who deprived farmers of the fruits of their labor and trapped them to death? The word "I still starved to death" profoundly exposed social injustice and condensed the poet's strong indignation and sincere sympathy.