ddenly roared. The earth began to tremble, and crystal skulls sprang up from the ground one by one.Nine skulls, constantly rotating around Ni Sidao's body, each emitting black mist from their mouths,...ed his hand to quiet the crowd and said, "Everyone, although we have this secret realm, we cannot lose our foothold in the Hidden World!""If the eight major secret realms find out about our hidden rea...