阳晋 / Yangjin (Warring States)
阳晋 / Yangjin appears in 《资治通鉴·周纪》60丨 中国第一位把持朝政的太后竟是她？ as one of three Wei-side places 秦国 captures in 303 BCE, along with 蒲阪 and 封陵. The episode treats the group as a strategic set of crossings linking Hexi and Hedong.
The source does not give Yangjin an independent story. Its function is geographical: it makes Qin’s anti-Han/Wei turn under 芈八子 / 宣太后 concrete by showing which river-crossing and route assets Qin pressures.