C73 Annihilating Chi Xiao(1)

The further you go, the harder it becomes for you to practice the Book of the Divine Ox , the more difficult it becomes for you to practice it in the later stages. After condensing the fifth Ox Soul, Gu Ning found that the energy required to condense the sixth Ox Soul was ridiculously large. Even if he used up all of his Flood Dragon Blood Essence and Spirit Qi Bead