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
With the old capital city in ruins, the new Zhou king, King Ping, hastily relocated the capital to Luoyi (雒邑), starting the Eastern Zhou Dynasty. When King Ping moved east, a minor vassal lord from the land of Qinyi (秦邑), Duke Xiang, provided military escort. To reward Duke Xiang's contribution, King Ping formally granted him a nobility rank and enfeoffed him as a feudal lord, elevating the clan of Qin from a lowly "attached state" (附庸) to a major vassal state. Fearing another barbarian attack from the west and desperately in need of a buffer state, King Ping further promised Duke Xiang that any lands the Qin clan could seize from the Rong tribes west of Qishan (the former heartland of Zhou), they could keep permanently as their own fief. As a marcher clan already with a bitter history with the Xirong tribes, the new noble state of Qin were greatly motivated by this royal promise, and successive generation of Qin rulers died in battle against their Xirong enemy, three of the largest being Mianzhu (綿諸, near modern-day Tianshui), Dali (大荔, near modern-day Dali County), and Yiqu.