This website is about the Qin Dynasty. The Qin Dynasty were the first Chinese empire to unite all of China under one rule. The Qin Dynasty started in 221 B.C.E and ended in 206 B.C.E. The first emperor Qin Shi Huang came to power after the Warring States Era. After he had taken control of all 7 warring states, he declared himself as Qin Shihuangdi, or The First Emperor.