Temple books are divided over this lot. Two lead with Qin's defeat and its three captured generals; one leads with the death of Han Fei, and another tells both. In 627 BC Duke Mu of Qin ignored the warning of his old minister Jian Shu and sent an army to strike the distant state of Zheng. On the way home it was ambushed by Jin in the Xiao mountains, and all three commanders were taken. Han Fei, the great Legalist thinker and a prince of Han, went to Qin as an envoy, impressed its king, and was imprisoned through the slander of his old fellow student Li Si, who sent him poison in 233 BC. Both walked into the trap themselves, like the swan flying into its own cage in the image line. That is why the lot is lower.