At the beginning of the Spring and Autumn Period, Qin was once pushed out by the great powers, and was called the kingdom. It was not until Mu shared five sheepskins for white that Qin became powerful. Later, another one, whose commercial reform made Qin the overlord of the Warring States Period.
In addition, Qin unified China, and the first emperor of China was of great significance. Isn't the Great Wall the location of Qin during the Warring States Period?