蓝田之战 / Battle of Lantian
蓝田之战 / Battle of Lantian appears in 《资治通鉴·周纪》51丨 楚怀王：秦小儿看舅舅如何灭了你！ as the second stage of 楚怀王’s angry war against 秦国. After the defeat at 丹阳之战 and the loss of 汉中, Chu Huaiwang mobilizes the whole country again rather than resetting his objective.
The episode says Qin draws the 楚国 army through 武关 and 商於 toward the Xianyang area, then counterattacks near Lantian after Chu has advanced too deeply and stretched its supply line. 韩国 and 魏国 simultaneously threaten Chu’s capital region and rear, forcing Chu to withdraw and cede cities for peace. Lantian therefore marks the moment when anger-driven persistence compounds the first defeat into strategic isolation.