How difficult was it to become a Supernatural martial artist?

Tyrus had lived for thousands of years but only broke free from the body’s second shackles, so it could be concluded that becoming a Supernatural was no easy feat.

Tyrus told James that cultivating in the past was challenging.

However, he said they were about to usher in the best age to cultivate. Once the seal opened, the earth’s Empyrean Spiritual Energy would recover, and it would be an excellent cultivation era.

Those who were