Han conquest of Gojoseon

Yan was defeated, and Lu Wan fled to the Xiongnu, while Wi Man sought refuge in the eastern kingdom of Gojoseon.

[1][3] Wi Man's grandson, King Ugeo of Gojoseon, interrupted direct contact with envoys sent by various tribal chieftains on the Korean Peninsula to the Han court.

[4] The direct pretext for war thus came when King Ugeo had the Han envoy executed, which angered Emperor Wu considerably.

Yang Pu spent the next ten days rounding up the remnants of his army, which had fled into the nearby mountains.

[1] When Emperor Wu received news of these defeats, he wished to reestablish peaceful relations between Han and Gojoseon.

Xun Zhi and Yang Pu converged on Wanggeom-seong and laid siege to it, but the city was well guarded, and after several months it had still not fallen.

After a sudden attack by Xun Zhi, the high minister of Gojoseon secretly sent envoys to discuss terms of surrender with Yang Pu, however no final agreement was reached.

Xun Zhi wished to make an all out attack on the city but Yang Pu favored continued negotiations, therefore relations between the two generals began to strain.

When Emperor Wu sent the governor of Jinan, Gongsun Sui, to straighten things out, Xun Zhi told him that Yang Pu was delaying the defeat of Gojoseon.

[12] While the surrendered nobles and ministers of Gojoseon were enfeoffed as marquises, Xun Zhi was arrested upon returning home and executed for jealousy and betrayal of strategy.