The Han Dynasty (206 BC – 220 AD) was an imperial dynasty of China, preceded by the Qin Dynasty (221–207 BC) and succeeded by the Three Kingdoms (220–280 AD). Attention API Users! The urls for accessing status xml and downloads are changing. The protocol will change from http to https and the hostname will change from tdr. There is no way of avoiding the fact that China is the central culture of Eastern Asia. Massively larger than any of her neighbors, China may have developed.