They also knew that the space wasn't flexible enough. Some magical beasts were almost all programmed products. It wasn't easy to make these magical beasts mutate in the space.
The space could indeed cause some ordinary plants to mutate, but those ordinary plants would only mutate after they were moved from the ordinary space to hell. If they grew freely in the ordinary space, it would be impossible for them to mutate.
In other words, in the space, only when the environment changed could magical beasts or plants mutate. It was only a possibility, not a definite possibility.
The environment in the infernal realm was very similar to the underworld. If the monsters from the underworld were brought into the infernal realm, it was impossible for them to mutate. That was why Zhao Hai had never thought of bringing the monsters from the underworld into the infernal realm.