In the first year of Huang Wu (222), xelloss found that Sun Quan was not really attached, so he ordered Cao Xiu, Zhang Liao and Cang Ba to send troops to the mouth of the cave, Coss to send troops to ruxu dock, and Cao Zhen, Xia Houshang, Zhang He and Huang Xu led the troops to besiege Nanjun and cut Wu in three ways. Among them, two roads have their own winners and losers, and the overall situation in Wei Jun is dominant. However, due to Wu's attack on Cao, the whole situation was reversed, and the result in Wei Jun was not as expected. In the same year1February, Sun Quan sent Zheng Quan, a Chinese medicine practitioner, to visit Liu Bei in Baidicheng, and Shu and Wu were reunited. However, Sun Quan still had diplomatic contacts with Cao Pi, and it was not until the following year that the relationship was officially severed.

In the first year of Huanglong (229), Sun Quan officially ascended the throne in Wuchang (now Hubei), and the founding name was Wu, and the Sun Wu Dynasty was formally established. Gongsun Yuan is a separatist regime in Liaodong, and has been in contact with Sun Quan for many times since the seventh year of Huang Wu (228). In May, Sun Quan sent a special envoy to Liaodong. In June, he negotiated with Kyle, the ambassador of Shu who came to congratulate Sun Quan on his accession to the throne, divided Cao Wei's Kyushu equally, and made an alliance book. In September, Sun Quan sent a letter to move the capital to Jianye (now Nanjing), and ordered the general Lu Xun to assist Prince Sun Deng and Dong in handling state affairs and stationed in Wuchang.