Liu Bei invaded Wu in 221 to avenge the death of Guan Yu. At Yiling (modern Yichang, Hubei) the young Wu commander Lu Xun held out for months, then torched the Shu stockades linked along the forested bank — the episode immortalised as
火烧连营七百里 ('seven hundred li of burning camps'). Liu Bei retreated to Baidicheng and died there the next year. It is the third of the Three Kingdoms' 'three great battles' after Guandu and Red Cliffs.
