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.
Empress Qian
Empress Qian had no children, and when the Zhengtong Emperor died in 1464, he was succeeded by the Chenghua Emperor. She became involved in a conflict with Empress Xiaosu, the biological mother of the new emperor. As the mother of the emperor, Empress Xiaosu demanded the same title as Qian: that of empress dowager. The mother of the emperor pointed out that she was the mother of the emperor while Qian was childless, while Qian demanded the title pointing to her loyalty to the late emperor, whose house arrest she had shared.
The emperor was unable to solve the conflict to the satisfaction of both parties, but granted the title of empress dowager to both, though Qian's formal title acknowledged her higher rank and precedence in court proceedings.