In some ways, Zulong only refers to Qin Shihuang Ying Zheng. Mainly because Qin Shihuang ended the turbulent period of the Spring and Autumn Period and the Warring States Period, and eventually became a man who unified the whole country. He was also the first person in history to call himself "the emperor". At that time, people thought they were descendants of the dragon, and the totem of the Terran was the dragon, so they called Qin Shihuang "Zulong".