Urgent, briefly describe the four major poetic schools in the Northern Song Dynasty and their representatives, especially the differences between Huajian School and Late Tang School.

Bold school, one of the styles of China's Song Ci. Writers in the Northern Song Dynasty, such as Ouyang Xiu, Wang Anshi, Su Shi and Su Zhe, all used the word "bold" to comment on poetry. Su Shi was the first to discuss ci with "boldness". According to Yu Wenbao's "Continued Blowing Sword Record" in the Southern Song Dynasty: "Dongpo has a good teacher in Yutang. Because he asked,' How is my word better than Liu's?' Yes, Liu Langzhong said, "In Liu Langzhong's words, only 178 girls clapped their hands with red teeth and sang the waning moon of Yang Liuan Xiaofeng. Bachelor degree, you must be a big shot in Kansai, holding an iron plate and singing the river of no return. "Volkswagen was completely defeated." This story shows the contrast between two different styles of words. People in the Southern Song Dynasty have clearly regarded Su Shi and Xin Qiji as the representatives of the uninhibited school, and they have been inherited to this day.

Graceful and restrained school is a school of China's Song Ci. Graceful, that is, tactfully implicit. Its main characteristics are that the content focuses on children's amorous feelings, the structure is profound and meticulous, the melody is euphemistic and harmonious, the language is round and beautiful, and there is a kind of femininity. The representatives of graceful and restrained school are Li Yu, Liu Yong, Yan Shu, Ouyang Xiu, Qin Guan, Zhou Bangyan and Li Qingzhao (the most famous poetess in Song Dynasty).

"Jianghu Poetry School" is a poetry school that rose after Yongjia Four Spirits in the late Southern Song Dynasty, and was named after Jianghu Collection published by Chen Qi. At that time, Chen Qi, a bookseller, made friends with Jianghu poets, so he published and sold Jianghu Collection, Continued and Postscript. Later generations regard the poems in Jianghu Collection as similar, so they are called Jianghu Poetry School. Most of the poets recorded in Jianghu Collection are either disheveled or have low rank and humble status, boasting about Jianghu habits. Jianghu poets always express their admiration, seclusion and disdain for their official career, and often criticize the current disadvantages and ridicule the current politics, expressing their unwillingness to associate with the current position. Among the Jianghu poets, Dai Fugu and Liu Kezhuang have made great achievements.

Jiangxi Poetry School is the first poetry school with a formal name in the history of China literature. In the late Northern Song Dynasty, a school of poetry with Du Fu as the Sect and Huang Tingjian, Chen Weizu as the Zu was formed. This school advocates Huang Tingjian's theory of turning iron into gold and robbing a fetus to change bones. Moreover, the members of the poetry school are mostly influenced by Huang Tingjian, and their poetry creation style is mainly chanting the life of the study and paying attention to the scrutiny skills of words.

Huajian School, a brand of five pronouns in China in the late Tang Dynasty, was named after Huajian Collection compiled by Zhao Chongzuo in Houshu. Hua collected 18 words from Wen and Wei Zhuang, including 500 words. Because most of its authors are from Shu, their ci styles are similar, and the content of their ci works is always in my heart, and they hate parting, and they are confined to the privacy of men and women, so their style is not high, so they are called "Huajian Ci School".

The late Tang School was named after Jia Dao and Yao He, poets of the patriarchal clan system in the late Tang Dynasty. The main writers are Pan Lang, Ye Wei, Lin Bu and the "Nine Monks" represented by Hui Chong. Most of them are hermit monks. Their poems describe the mountain scenery and secluded life around them, express carefree feelings, pay attention to the five laws in form, have a quiet artistic conception in a simple and elegant style, and have the function of dispelling the flashy style of the Five Dynasties.

Late Tang poetry school is a modern poetry school that studies late Tang poetry through index list. The leading figures are Zengxiang Fan and Yi Shunding. They focused on Li Shangyin, Wen and Han Wo, poets in the late Tang Dynasty. Starting with Han Wo's "fragrant style", they wrote colorful poems, pursuing clever antithesis, meticulous handling of official affairs, rich and colorful words, and keeping the poetic style elegant, neat and beautiful.

Hope to adopt, thank you.