Facing his disciple's doubts, Luo Qing smiled and explained.
"Of course, allowing the Demon Race to have these worlds comes with conditions.
"First, only worlds that have fallen into continuous decline will be opened for the Devil Dao to invade.
"Second, the Demon Race cannot overwhelm others by force. The power used to invade a world cannot exceed three times that of the world itself.
"Furthermore, among the forces invading the world, the highest cultivation level cannot exceed the world's limit.
"Third, the Demon Race will have only one chance to invade. If the invading army is defeated,
"the Demon Race must give up on continuing its invasion of that world."
Luo Qing laid out three rules for Luo Lian.
There was nothing wrong with clearing out worlds that had fallen into resource depletion and decline ahead of time.
But Luo Qing had still left those worlds a glimmer of hope.
As long as they could rise up and resist when faced with the Devil Dao's invasion, they might yet have a chance to recover from the brink of death and regain their former glory.
Worlds that returned from the dead were often more likely to undergo transformation and advance into higher-level worlds.
The Devil Dao invaded weakened low-dimensional worlds.
The low-dimensional worlds, in turn, relied on the Devil Dao's stimulation to make one final desperate struggle.
If they lost, the world would be destroyed and its inhabitants would perish, while the World Origin would be plundered by the Demon Race.
If they won, they would regain their vitality and embark once more on the path to prosperity.
It was a win-win situation for both the Demon Race and the low-dimensional worlds.
Luo Lian heard the three conditions her teacher had proposed.
She immediately understood her teacher's purpose.
This was