Divine Realm...
The next path after the nascent soul or Martial Ancestor in terms of power.
If a Martial artist walks on the path of Martial arts, he will soon face the catastrophic force of nature and be bombarded with the force of nature..or so-called lightning tribulation.
Meanwhile, if a person shifts to cultivation, the only tribulation he will face will be at the Nascent Realm stage. And lightning tribulation unlike the one faced by Martial Artist was quite deadly to deal with.
So dangerous that out of every 10 Nascent Souls respect trying to break through Divine Realm, only one manages to succeed.
As for the other one, his ashes would be scattered by wind in four directions as a ritual.
Jokes apart, in the case of Leon the situation was more grievous than one can think of cause once he left Martial realms, he would face tribulation at a major breakthrough.