King of Wu
In late 220, Cao Pi forced Emperor Xian to abdicate the throne in his favour and ended the Han dynasty. He declared himself emperor and established the state of Cao Wei to replace the Han dynasty, marking the start of the Three Kingdoms period. Two years later, Liu Bei proclaimed himself emperor and established the state of Shu Han as a successor to the Han dynasty and to challenge Cao Pi's legitimacy. Sun Quan agreed to submit to Cao Pi's rule and received the title of a vassal king, King of Wu" (吳王). However, in late 222, he declared independence from the Cao Wei regime but retained his title "King of Wu".