King of Wu
On 23 September 221, Cao Pi awarded Sun Quan the title "King of Wu" (吳王) after the latter pledged allegiance to him and agreed to become a vassal of Wei. However, in November 222, Sun Quan broke ties with Cao Pi and proclaim himself an independent ruler of his Wu state. He continued to rule under the title "King of Wu" and did not declare himself emperor until 229.