Ранняя Янь
In 359, with Former Yan exerting pressure on Jin possessions south of the Yellow River, the generals Xie Wan (), Zhuge You (), and Chi Tan () advanced north to attack Former Yan, but the forces collapsed after Xie wrongly believed that Former Yan forces were near and ordered a retreat. Without aid, Jin possessions south of the Yellow River began to fall into Former Yan hands.