The territory of the motherland should be defended to the death, and the author should not compete with others. The author was Li Gang of the Song Dynasty. This sentence comes from "History of the Song Dynasty: Biography of Li Gang Part 1". In this memorial, Li Gang expressed his firm patriotic stance, emphasizing that the land left by his ancestors should be defended at all costs and should not be ceded to anyone. Li Gang (July 27, 1083 - February 5, 1140), also known as Boji and Tianji, was also known as Mr. Liangxi, Liangxi Jushi, and Liangxi sick old man. His ancestral home is Shaowu, Fujian, and he moved to Wuxi (now Wuxi, Jiangsu) during his ancestor's time. During the two Song Dynasties, he was a famous minister and national hero who fought against the Jin Dynasty. Li Gangneng wrote many patriotic chapters in his poems and essays. He was also able to write poems. His poems about history have vivid and vivid images, and his style is vigorous and powerful. He is considered to be an important transitional poet in Song Dynasty from the graceful style to the bold style. Li Gang wrote a lot in his life, and his posthumous writings were compiled into "The Complete Works of Liangxi" by his disciples. Today, there is a collection of "The Complete Works of Li Gang".