공손찬
In time Yuan Shao's army reached the gates of Yijing, but the fortress withstood several attacks from Yuan Shao's army for years until 198. Gongsun Zan sent his son Gongsun Xu to request help from the Heishan bandits in the Taihang Mountains. Gongsun Zan's idea was to break through the siege with his cavalry and group with the Heishan bandits, then attack Ji Province and cut off Yuan Shao's line of retreat, forcing him to abandon the siege. However, Guan Jing advised against the plan, saying that the defenders were only willing to fight to protect their families in Yijing and could not be relied on to defend Yijing if Gongsun Zan left. Gongsun Zan then took Guan Jing's suggestion to withstand the siege until the time when Yuan Shao would be forced to retreat.