From 《
太平广记》
卷四三〇 and
宋·
孙光宪《
北梦琐言》: a
伥 (chāng) was said to be the ghost of a person eaten by a tiger. The ghost was forced to serve the tiger — walking ahead to lure other victims into the tiger's path. The most chilling image of being made an accomplice against your will.