In fact, Zhao Hai's main method to deal with those old turtles was the art of purification. The previous few Arts were just disguises for the art of purification. For example, the art of unlocking heaven's thousand potential could cover up part of the spiritual fluctuations of the art of purification. The same was true for the art of beast taming. The art of the intellectual sword was even more so. He used the spiritual fluctuations of these three Arts to block the spiritual fluctuations of the art of purification. Finally, he used the art of purification to invade the spirit of the old turtles bit by bit. In the end, the old tortoise was subdued.
Old tortoise's combat power was much stronger than that of an ordinary immortal stage powerhouse. Even if Zhao Hai and Julie were to fight him, they could only end up in a draw and gain a slight upper hand. However, it would be extremely difficult to take old tortoise's life.
