Background of the Qin Dynasty's invasion of Korea: Central and eastern Henan and northern Henan were vassal states established after the three tribes were divided into Jin, with Anyi as their capital (now northwest of Xia County, Shanxi Province). Since Wei Wenhou came to power, he has appointed a number of famous ministers, such as Li Kui and Wuqi, and devoted himself to the reform of the country and the army, making the country stronger and stronger.
Wuqi implemented the conscription system in Wei State and trained an elite army. Its "ranks" can be armed to the teeth, and the three diets "travel a hundred miles a day" ("Xun Zi Yi Bing"), Wei wants to develop westward and seize the land of Hexi in the east of Qin State.
Qin is a big vassal state in the west, that is, Jingyang (now northwest of Jingyang, Shaanxi), and it is one of the four great powers in the Spring and Autumn Period. However, in the early Warring States period, due to internal power disputes, kings changed frequently, clan forces were too strong to form a strong rule, and social changes were not completed. Although it means to move eastward, its military strength is weaker than Wei's.
About the author:
Liu Xiang (about 77-6 BC), also known as Liu Gengsheng, has a proper word. Confucian classics, bibliographers and writers in the Western Han Dynasty. Pei county (now Jiangsu) people. Grandson of King Jiao Liu IV of Chu Yuan. When Xuan Di proclaimed himself emperor in the Han Dynasty, he advised doctors. Zong Zheng was appointed Emperor of the Han Dynasty. Against eunuch Gong Hong, Shi Xian went to prison, waiting to be released. Later, he was imprisoned for anti-Gong and anti-Xian.
After Emperor Cheng of Han acceded to the throne, he was appointed as Dr. Guanglu and renamed "Xiang", and officials went to the school to comfort him. I was ordered to lead the school secretary and write the earliest open book catalogue "Bielu" in China. Treating the biography of Liang in the Spring and Autumn Period. He wrote 33 poems, including Nine Sighs, most of which have been lost. Today, there are books such as New Preface, Shuoyuan and Biography of Lienv. And The Five Classics was compiled by Ma Guohan and A Qing Dynasty in Yi Tong. The original compilation was lost, and the Ming people compiled it as Liu Ji. For the life story, see Hanshu Volume 36.