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).
Zhao Xing
Zhao Xing was the second son of King Zhao Yingqi, and his mother was a Han Chinese woman called (樛氏). In 135 BC, Zhao Yingqi was sent to the Han court by King Zhao Mo of Nanyue, to serve as Emperor Wu's guard (宿衛, "Sù wèi"). Before leaving for Chang'an, Zhao Yingqi had married a Yue woman and had his eldest son Zhao Jiande. While in Chang'an, he was married to Lady Jiu, and had his second son, Zhao Xing.