What are the characteristics of poetry in the Southern Song Dynasty?

The tragedy of the collapse of the Northern Song Dynasty rekindled the poet's enthusiasm for caring about reality, and a number of works recorded the sufferings of the times appeared. Patriotism and resisting the enemy became the most important theme in Southern Song poetry. In the mid-Southern Song Dynasty, outstanding poets such as Lu You, Yang Wanli and Fan Chengda appeared. They got rid of the shackles of Jiangxi poetry school, extracted poetry materials from real life and nature, expressed their ambition to save the country, and described the sufferings of people's livelihood and rural life, forming another prosperous period of Song poetry.