Before King Wu's death, he finally understood this principle: in this world, apart from his own people, no one can be trusted.
Outsiders treat them well, simply because they have value to exploit. And once their value is exhausted, they can be abandoned at any time.
The Master of the Heavenly Palace is just like this. When the Immortal World barely defied his will, he immediately turned hostile, preparing to teach the Human Race of the Immortal World a lesson.
If Jiang Chen had not appeared in time, the outcome waiting for the Human Race in the Immortal World would have been nothing more than two possibilities: one is the destruction of the entire clan, with their Fate being divided by others; the other is becoming traitors to the Human Race, completely surrendering to the Master of the Heavenly Palace.
