龙甲 / Long Jia
龙甲 / Long Jia appears in 《资治通鉴·周纪》14丨齐威王 不鸣则已一鸣惊人 as the 魏国 general sent by 魏惠王 to build a western wall after 秦国 defeats 韩国 at West Mountain. The page keeps the transcript’s “龙甲” wording and uses Long Jia as the romanized handle for indexing.
His source role is military-infrastructure rather than biography. The wall-building notice turns Qin eastward pressure into a material defensive response, captured in 魏长城防秦.
《资治通鉴·周纪》31丨合纵连横 围殴秦 adds Long Jia’s defeat and capture when Qin attacks Wei, kills or defeats more than forty thousand Wei troops, and takes Diaoyin. The episode uses the event less as a Long Jia biography than as the immediate military shock that threatens 苏秦’s 合纵 timing.
Connections
- 魏国 and 魏惠王 - state and ruler giving the assignment.
- 秦国 and 韩国 - pressure setting after the West Mountain defeat.
- Wei Great Wall Anti-Qin Defense / 魏长城防秦 and Qin Eastward Pressure / 秦国东进压力 - concept frame for the wall notice.
- 苏秦 and 合纵 - Zhouji 31 diplomatic consequences of his capture.