The development of Zhongshan has experienced three stages: Rongdi, Xianyu and Zhongshan. At the beginning of the Spring and Autumn Period, Xianyu was still very weak, and was attacked by Guo Xing, a vassal state, many times, which did not pose much threat to the Western Zhou Dynasty. However, Guo Xing gradually declined. In 652 BC, Xianyu sent troops to the south, defeated Guo Xing and Guo Wei, forced Xing to flee, and Wei was killed. Due to the rise of Qi Huangong, Xian Yu was defeated after unifying the vassal states of Song, Cao, Xing and Wei.
In the middle and late Spring and Autumn Period, the heavy responsibility of resisting the northern Rong Di fell on Jin State. In 527 BC, Duke Zhao of Jin attacked Xianyu (later Zhongshan State) and destroyed the vassal states such as Fei and Drum. But in 507 BC, Xian Yu sent troops to attack the State of Jin, revenging himself twenty years ago. Later, it even joined forces with Qi, Lu and Wei to attack the State of Jin, which brought great trouble to the State of Jin.
At the end of the Jin Dynasty, Sun Yat-sen suffered a fatal blow from the Jin Dynasty, and even did not appear in the history books for 20 consecutive years. After the three clans were divided into Jin, Zhongshan martial arts began to emulate the political, military and economic systems of the Central Plains, and rose rapidly in the civil strife in the Central Plains. However, martial arts died young, Zhongshan was destroyed by Wei in the hands of the young Duke Huan, and the rest retreated to Taihang Mountain.
After 20 years of hard work, Duke Huan of Zhongshan returned to China in 380 BC, and his territory divided Zhao into north and south, thus becoming Zhao's confidant. After defeating Zhao's attack twice in 377 BC and 376 BC, it took Sun Yat-sen twenty years to build the Great Wall to fight against Zhao. According to historical records, at this time, the number of state-owned soldiers in Zhongshan was "9,000 times". How many people are there in a bus? There are two sayings: "three soldiers, seventy-two soldiers", that is, seventy-five; "Ten people and twenty cars", that is, thirty people. In short, there are 270,000 soldiers in Zhongshan! You know, at the end of the Warring States Period, the total strength of Zhao was between 400,000 and 600,000.
In other words, before Zhongshan was destroyed, it was equivalent to Zhao's fighting capacity! No wonder it once defeated Qi, Wei and Yan, but it was helpless against Zhongshan, which seriously threatened the territorial integrity of Zhao!
After King Wuling of Zhao acceded to the throne, he decided to temporarily withdraw from the dispute in the Central Plains and solve the major threat in the north first. In the third, twentieth and twenty-first years of the reign of King Wuling of Zhao, Zhao attacked Zhongshan many times, and in the twenty-sixth year (300 BC), he seized the county seat and other places in Zhongshan, turning Zhongshan into China and Zhao.
At this time, Zhongshan was at a disadvantage in the war with Zhao. After King Wuling of Zhao defeated Lou Fan, Zhongshan was finally destroyed by King Wuling of Zhao in the third year of Zhao Huiwen (296 BC). This powerful military force that once dominated the north was eventually incorporated into the territory of China.