How to Cultivate Immortality Among the Demon Clan

"The monsters in the upper realm feed on our immortal cultivators." "Where did you come from? You were pulled out and marinated raw." We, the demon race, have been ruling the human race for thousands of years. We have found that those who cultivate immortality gather the spiritual energy of heaven and earth. Eating these humans will be of great benefit to us, the demon race, in improving our cultivation. There is no shortage of heavenly wealth and earthly treasures in our world. Immortal cultivators usually come out in the foundation building stage. Only the dragons in our demon clan are eligible to enjoy the pill forming stage or the Nascent Soul stage. As for the god transformation stage... How can it be possible to reach the god transformation stage with the weak bloodline of the human race?