Zhang Heng followed the blood trail from the library to an orphanage. The whole tracking process wasn't as simple as one thought it would be. Although the shadowy figure's calf was injured, it did not need to rely on legs to flee Zhang Heng since the black liquid allowed it to travel from wall to wall. However, moving within the confines of walls was no good feeling, and from time to time, it would need to stick out its head for a breath of fresh air.
Each time the figure emerged from the wall, it would leave a few drops of blood on the ground. The creature's blood was unique, and it was easily identifiable. Thicker than the blood of an ordinary human, it was darker, almost black, in fact. Not to mention the putrid stench it gave off. Still, it was no easy task to track droplets of blood in such a massive city.
