In 317 BC, at the suggestion of chancellor Zhang Yi, King Xiang entered into an alliance with Qin.
In 308 BC, the two kings met again at Yingcheng (modern-day part of Xiaogan, Hubei) to plan an attack on Han.
In 303 BC, Qin took advantage of Wei's alliance with Qi and Han against Chu to launch a second invasion.
This allowed alliance of Wei, Han and Qi in inflict a major defeat on Chu in 301 BC.
It was in King Xiang's tomb that the Bamboo Annals were discovered in AD 279, an event referred to as the Jizhong discovery.