King Zhaoxiang of Qin
In 306 BC, the young King Zhaoxiang ascended to the throne, with his mother Queen Dowager Xuan serving as regent. Knowing Qin could not focus on eradicating Yiqu when it had the hostile eastern states to deal with, and her son's rule was still shaky due to numerous rival princes keen to capture the throne, Queen Dowager Xuan decided to use an approach of pretended conciliation. She invited the king of Yiqu to live long-term in the Ganquan Palace, and consummated a seductive liaison that produced two sons with him. This completely removed the Yiqu King's hostility towards Qin, as the beguiled king had lost all cautiousness around the Queen Dowager. At the same time, King Zhaoxiang was aggressively acting to weaken rival warring states in the east and south, and Queen Dowager Xuan was secretly planning with her son the eventual annihilation of Yiqu.
King Zhaoxiang of Qin
In 289 BC, King Zhaoxiang sent Bai Qi and Sima Cuo to attack Wei, capturing 61 villages around Zhi. However, in 288 BC, Qin was forced to back down when the five eastern states allied together and threatened to attack Qin again. It did not take long for Qin to strike back, capturing Xinyuan (新垣) and Quyang (曲陽) from Wei in 287 BC, and the former Wei capital Anyi (安邑) in 286 BC. In 283 BC, Qin allied with Zhao and attacked Wei again, capturing Ancheng (安城) with its vanguard reaching near the Wei capital Daliang (大梁).