Boom!
Within the Southern Celestial Gate, one could only see that Sun Wukong pretended to be captured. But once inside the Southern Celestial Gate, he broke free immediately and began to wreak havoc within the Celestial Court.
Without the restraint of the Erlang God, Sun Wukong seemed virtually invincible, sweeping away with his staff and causing the gods to flee in panic, utterly unable to match him.
Now looking at Tuota Heavenly King, seeing the situation turning sour, he retreated directly outside the Southern Celestial Gate, focusing his gaze outwards, showing no intention of dealing with Sun Wukong.
His duty was to guard the Southern Celestial Gate. The evil monkey hadn't broken through the Southern Celestial Gate; rather, he had been captured and brought inside it and then let go inside it.
That had nothing to do with him; after all, his duty didn't involve managing the inside of the Southern Celestial Gate.
"The Southern Celestial Gate, nothing has happened."