负黍 / Fushu
负黍 / Fushu appears in 《资治通鉴·周纪》07丨两起刺杀（2） as a city that repeatedly changes hands among 韩国, 郑国, and 楚国. The episode says it was originally a Han city, was seized by Zheng in 407 BCE, defected back to Han in 394 BCE, and was soon taken from Han by Chu.
The page anchors Territorial Control Churn / 城池反复易手. Fushu is not treated as important only because of its own size; it is a compact example of how border cities, defections, and fast follow-on campaigns make the early 战国时期 feel less stable than the older aristocratic order.
《资治通鉴·周纪》98丨历史上首个老赖登场了！ brings Fushu back in the late Warring States endpoint. In 256 BCE, a Qin offensive against 韩国 takes Yangcheng and Fushu, showing that the same place once used to illustrate early territorial churn now sits inside 秦国’s final pressure on the eastern states and the closing of the Zhou-annals frame.
Connections
- 韩国, 郑国, and 楚国 - states in the source’s control sequence.
- Territorial Control Churn / 城池反复易手 - main concept illustrated by the city.
- Small-State Buffer Diplomacy / 小国夹缝外交 - adjacent Zheng pressure frame.
- 战国时期 - period setting.
- 秦国, 周赧王, and 秦国东进压力 - Zhouji 98 late capture under Qin pressure.