Qin dynasty
Note: King Zhaoxiang of Qin (秦昭襄王) had already been ruling Qin for 51 years when Qin annihilated the Zhou dynasty; however the other six warring states were still independent regimes. Some Chinese historiographers thus used the next year (the 52nd year of King Zhaoxiang of Qin) as the official succession from the Zhou dynasty.
King Zhaoxiang of Qin
Prince Ying Ji was born in 325 BC to one of King Huiwen's more lower-ranked concubines, Lady Mi (羋八子). As a "shu" child, Prince Ji was given low priority in the royal line of succession, and as an underage child was not granted a fief because the state of Qin employed a system of meritocracy that demanded that even princes earn their own lands through national service. He was dispatched to the state of Yan at a young age to serve as a political hostage, a common diplomatic practice among vassal states throughout Zhou Dynasty.