What is the social phenomenon that "the late silkworms in Soochow broke their leaves at the beginning, and the early rice in the city wanted to move seedlings"?

This poem mainly describes farming activities, harvesting silk and planting rice. Combined with the background of the dynasty in which the author lived, we can learn from the poems that in the Song Dynasty, more people began to pay attention to the cultivation of rice instead of millet, and rice cultivation has achieved fruitful results.

Su Shi and others may wish to know the author of this poem before formally introducing it. First, because of what Su Shi did? A prodigy? It is worth remembering again and again. Secondly, by understanding the life of a poet, it is also helpful for us to analyze the specific trend of this poem.

Su Shi, whose word Zi Zhan, whose word Zhong Zhong, is called Dongpo lay man. Meishan, Meizhou, Luancheng, Hebei, a famous writer, calligrapher and painter in the Northern Song Dynasty. Su Shi is the representative with the highest literary achievement in Song Dynasty. Eight masters in Tang and Song Dynasties? One of them? Song Sijia? First, the main representative of the uninhibited school. His representative works include Seven Chapters of Dongpo, Dongpo Yi Zhuan, Dongpo Yuefu and so on. ? Zhancheng rice? Zhancheng rice is a high-yield, early-maturing and drought-tolerant rice variety produced in Indochina Peninsula. It was introduced to China in Song Dynasty, and spread rapidly in Jiangnan. Zhancheng rice is based on the place of origin. Zhancheng Rice, also known as Zaohe or Zhanhe, is an early indica rice, which originated in south-central Vietnam and was first introduced to Fujian in the early Northern Song Dynasty. According to China ancient books, Zhancheng rice has many characteristics. One is? Drought tolerance? . Second, it is adaptable. Random birth? . Third, the growth period is short, and it only takes 50 days from planting to harvesting. It can be seen from the introduction that rice cultivation has great advantages.

This poem reveals the shift of economic center of gravity. As a big agricultural country, agriculture is the foundation of national economy. When the economic benefits brought by rice planting are greater than those brought by millet planting, the national economic center of gravity will shift. Previously, the pattern of rice in northern Jiangsu has been formed, and due to the geographical environment, it is conducive to the development of rice cultivation in the south, so it can be seen that the economic center of gravity has also shifted from the north to the south. The south has gradually become a fertile land.

There are many poems that describe rural scenery purely. Can these poems handed down help us effectively? Recall historical customs.