Introduction to staying green forever: There are many stone inscriptions from the Ming and Qing dynasties existing in Guanshan Academy, such as Wang Zao's poem "Guanshan Mingxian Academy" poem tablet, Chen Fengwu's poem tablet "You Guanshan Academy", Sun Yuzhi's Collection of Willows There are five-character poems carved on the stone of Xuanmi Pagoda, Qiao Yu's poem "Visiting the Former Site of Zuocheng Lugong Academy in the Snow", Bai Jin's "Notes on the New Gaoling Academy" and Fu Mei's five-character poems carved on stone, etc. Among them, Qiao Yu's poem tablet is the most praised by future generations. Qiao Yu's poem said: "The steep mountains and high hills are covered with snow, and the crowned mountains are far away in the white clouds. Pines are winding out of the thick ground, and flowers are scattered in the sky. I want to find a hidden cave in the danger, but I still go up high to study. I look up to you all my life. The virtuous people in the countryside should not leave behind Min Caocai. "This poem describes the emotions and scenes, and the scenes are blended together. Although the wording is calm, it comes from the heart and belongs to the poet's true state of mind.