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 284 BC, King Zhaoxiang sent troops in a five-state alliance of Qin, Yan, Zhao, Wei and Han, led by the Yan general Yue Yi, to attack Qi. Over 70 cities were captured including its capital Linzi (臨淄), leading to the murder of King Min of Qi by his supposed Chu ally.