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 Wu of Qin
King Wu of Qin (; 329–307 BC), also known as King Daowulie of Qin (秦悼武烈王) or King Daowu of Qin (秦悼武王) or King Wulie of Qin (秦武烈王), was the ruler of the Qin state from 310 to 307 BC during the Warring States period of Chinese history.