List of emperors of the Han dynasty
The Han dynasty was founded by the peasant rebel leader (Liu Bang), known posthumously as Emperor Gao ("r". 202 –195 BC) or Gaodi. The longest reigning emperor of the dynasty was Emperor Wu ("r". 141–87 BC), or Wudi, who reigned for 54 years. The dynasty was briefly interrupted by the Xin dynasty of the former regent Wang Mang, but he was overthrown in 23 AD and the Han dynasty was reestablished by Liu Xiu, known posthumously as Emperor Guangwu (r. 25–57 AD), or Guangwu Di. The last Han emperor, Emperor Xian ("r". 189–220 AD), was a puppet monarch of Chancellor Cao Cao (155–220 AD), who dominated the court and was made King of Wei. In 220 AD, Cao's son Pi usurped the throne as Emperor Wen of Wei ("r". 220–226 AD) and ended the Han dynasty.
He Qi
After the end of the Eastern Han dynasty in 220, He Qi continued serving under Sun Quan, who became an autonomous ruler of his Eastern Wu regime in southern China. On the other hand, Cao Cao's son, Cao Pi, usurped the throne from the last Han emperor and established the Cao Wei state in northern China. Between 222 and 223, the Wu and Wei forces clashed at the Battle of Dongkou. The Wei forces led by Cao Xiu defeated the Wu navy led by Lü Fan which had just experienced a natural disaster and lost several ships. Just when the Wu forces were worried about Cao Xiu's impending attack, Wu reinforcements led by He Qi showed up at Dongkou. Since He Qi arrived behind schedule, his fleet was not affected by the storm which destroyed many of Lü Fan's ships. At the same time, as He Qi had a penchant for extravagance, his ships were all finely decorated and his troops were equipped with the best weapons. Cao Xiu was shocked when he saw He Qi's grandeur display of his refulgent fleet. Believing that the Wu fleet was more powerful, Cao Xiu ordered the Wei forces to retreat, thus sparing Lü Fan and his remaining forces from almost certain doom. When Sun Quan heard about this incident, he promoted He Qi to the position of General of the Rear (後將軍).