The lifespan of various races was different. Spirits were the ones with the most extraordinary lifespan. They could live thousands of years even with a shallow cultivation base, but they were also very few and rare between as it took nature a great effort to create them.
Demons were the race with the second-longest lifespan. When a human and a demon were next to one another at the same level of strength, the demon could live more than three times as long as a human.
Beasts and human lifespan were very similar. They were also the races that were the most numerous on the whole continent, and they managed to reproduce at a rapid speed.
Their talents were also, overall, lacking when compared to the spirits and demons, but they were so many that there would naturally be a few highly talented descendants of all races.