Blood Scar Gu

Fang Zheng tries to activate it in a blood pool under Lord Sky Crane as the final step of Immortal Crane Sect drills that train him to locate Fang Yuan. ^{ch. 669}

Effect

After blood sense Gu reports a direction and distance, Lord Sky Crane orders Fang Zheng to use blood scar Gu to mark the position. Blood scar Gu has an extremely large demand for primeval essence. Successful activation requires lasting for ten breaths of time. ^{ch. 669}

Training limit

In the drill shown, Fang Zheng still has enough primeval essence in his rank five aperture but can mobilize only a small portion into blood scar Gu. He persists for eight breaths, then collapses unconscious into the blood pool, two breaths short of success. Lord Sky Crane reports that earlier progress and that remaining gap to He Feng Yang. ^{ch. 669}