King Zhaoxiang of Qin
Because King Zhaoxiang had not yet legally come of age (traditionally at the age of 20), his mother, who was now known as Queen Dowager Xuan, became the regent. She was supported by her brothers, Wei Ran and Mi Rong (羋戎), as well as two other sons, Prince Yi (公子悝) and Prince Fu (公子巿), the four of them collectively known as the "Four Nobles" (四貴).
King Zhaoxiang of Qin
In his first year as ruler (306 BC), King Zhaoxiang accepted the counsel of the Right Chancellor, Gan Mao (甘茂), who advocated the return of the Wusui (武遂) region back to the state of Han. The plan was opposed by two other officials Xiang Shou (向壽) and Gongsun Shi (公孫奭), who both despised Gan Mao greatly and proceeded to badmouth him repeatedly. This led Gan Mao to flee Qin in fear of his life and defect to the state of Qi.