Gu Xijiu frowned at the sight of his blood as she thought that Yun Yanli's blood was venomous. However, she was not very certain. Perhaps, his blood was a different color because he had practiced with black magic?
Furthermore, he had obviously fought with a vast number of ferocious beasts here in the Shura World in order to consume their spiritual stones. It could be that he had accumulated a lot of poison in his blood.
The strange thing that Gu Xijiu had also noticed was that the color of his blood seemed to be getting darker; it also appeared to get thicker over time. Was that a sign that he might die after completing the task set to him by Di Fuyi?
She glimpsed at Di Fuyi, who was standing by her side with one of his hands holding her hand while the other was holding a flute. He was pondering something as he fixed his gaze lazily on Yun Yanli.