As Regent
As regent, Jiang Wan was a capable administrator, and he continued Zhuge Liang's domestic policies, leaving the government largely efficient. He was also known for his tolerance of dissension and his humility. When Yang Min (楊敏) criticized him for being ineffective and not being as good at his job as his predecessor, Jiang Wan's response was, "Indeed, I am not as good as my predecessor," and he did not punish Yang Min.
Jiang Wan, however, not having military aptitude, soon abandoned Zhuge Liang's policy of waging war against Wei, and indeed in 241 withdrew most of the troops from the important border city of Hanzhong to Fu (涪縣; in present-day Mianyang, Sichuan). From that point on, Shu was generally in a defensive posture and no longer posed a threat to Wei. This was misinterpreted by many Eastern Wu officials as a sign that Shu was abandoning the alliance and entering into a treaty with Wei, but was correctly read by Wu's emperor Sun Quan as merely a sign of weakness, not an abandonment of the alliance. At one point, he considered sending an army heading east on the Han River to attack Wei's Weixing (魏興; in present-day Ankang, Shaanxi) and Shangyong (上庸; in present-day Shiyan, Hubei), but did not actually carry out those plans.
In 243, Jiang Wan grew ill and transferred most of his authority to Fei Yi and Dong Yun. In 244, when Wei's regent Cao Shuang attacked Hanzhong, it was Fei Yi who led the troops against Cao Shuang and dealt Wei a major defeat. Jiang Wan, however, remained influential until his death in 246. He was given the posthumous name Gong (恭, literally, "respectful").
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