Blade Gu

In The Legends of Ren Zu, after Ren Zu leaves the footprints of others and steps on ground that is not firm, ordinary abyss proves hard to walk. Some places are swampy, some are full of thorns, and in some parts of the ground there are also Blade Gu. ^{ch. 807}

Effect on Ren Zu

When Ren Zu steps on that ground, his soles are injured by the sharp blades. The injuries grow larger as blood flows, and when he walks the pain strikes deep within him. ^{ch. 807}