C337 Eutrophication of Water

Of course, Immortal karma was something very mysterious. Even now, Zhou Tian still didn't know what Immortal karma was, but the old man said that it was more likely for him to ascend to the Immortal Realm than him. Perhaps the old man accepted him as a disciple because he had Immortal karma.

However, the difficulty of training it is, the more difficult it gets, the more difficult it becomes