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.
Queen Dowager Xuan
Queen Dowager Xuan (; 338–265 BC), also called Mi Bazi (), was a girl from the royal family of the Kingdom of Chu and one of the imperial concubines (consorts but not the wife) of King Huiwen of Qin. She gave birth to King Zhaoxiang of Qin (r. 306–251 BC) and acted as his regent when he was young. As queen dowager, she entered illicit relations with the "barbarian" Yiqu king and had two sons with him, but later tricked and killed him. Following that coup, the Qin army marched into Yiqu territory at the queen dowager's orders; the Qin annihilated Yiqu and thus came to possess the Ordos region.