However, during the Warring States period, due to the disintegration of the well-field system, merger wars were frequent, countries fought endlessly, and smoke filled the air. A big country is divided into seven small countries, collectively known as the "Seven Heroes of the Warring States". (Qi, Chu, Yan, Qin, Han, Zhao, Wei)
So where do these seven countries belong in China now?
Among the Seven Heroes in the Warring States Period, Chu has the largest territory, covering most of the southern and central regions. Because Chu included many coastal areas at that time, some people even say that many people in the southern coastal areas are descendants of Chu, but there are also some southern areas, such as Guangdong, Guangxi, Fujian and parts of southern Zhejiang, which belong to Baiyue and are not within the jurisdiction of Chu.
During the Warring States period, wars continued, so the territory of many countries often changed. Qin had an annexation war with other countries, and lost part of the land along the Shaanxi border, but most of Shaanxi still belonged to Qin. Some areas in the central and western regions, such as the southeast of Gansu Province, were later conquered by the Qin people, and their areas expanded a lot to the central and eastern regions. In fact, the territory of Qin is still quite large.
The famous regime of Sanjin allowed Wei to seize parts of Shanxi, Henan and Hebei today, which was the most fertile land, making it difficult to defend the four wars during the Warring States period.
Compared with other countries, South Korea is not very strong. So its ruling area is not very big, only today's Henan. Therefore, the increase of land area will enhance the strength of the country to a certain extent.
Ye Zhao has carried out land expansion, mainly to the west, such as Inner Mongolia and Shaanxi, but also has its own territory. Therefore, the land of Zhao is mainly in Shaanxi, Inner Mongolia, Shanxi and Hebei.
Shandong, the land of Qilu, is related to Qi according to its name. Qi is located in the east of China, near the Yellow Sea. Yes, Shandong, together with parts of Henan and Hebei, constitutes the territory of Qi.
Do you know what kind of name Beijing used to have? According to ancient literature, there is a man named Yanjing. Now Beijing, Tianjin, Hebei and other parts are the territory of Yan State, including parts of Liaoning.