Zhao Hai had been following the old elephant for three days. In these three days, he had traveled more than ten thousand miles into the sacred Elephant Valley. It was impossible for other cultivators to go so far into the sacred Elephant Valley, because they would encounter many teleportation realm elephants along the way. Those elephants could easily discover them.
Zhao Hai was the only exception. Because of his special technique, the Mad elephants could not find him. That was why Zhao Hai could follow the old Mad elephant.