the qin dynasty (18h 44min, apr 17, 221 y BC – 15h 31min, jan 21, 206 y)
Description:
Qin Shi Huang was the first Chinese sovereign to proclaim himself Emperor after unifying ChinaAdded to timeline:
Date:
18h 44min, apr 17, 221 y BC
15h 31min, jan 21, 206 y
~ 427 years