Nine heaven’s tribulations lightning was an attack which Hui Yue had learned from the blue monk. It was a skill which he had gained more comprehension over after witnessing the Demon Lord use it in the Vermilion Bird’s mem ory.
The memory was rather brief, but it had left a lasting impression on Hui Yue's mind. Not only did he realize that this Demon Lord had hunted and killed everyone connected to the blue monk to gain his ability, but he also understood that this was an Ancestral Worldpower Skill which was many times more powerful than any other he had ever seen. It was even more powerful than the Phoenix Descent.
Having gained extra insight into the nine tribulations lightning, Hui Yue was no longer an easy target.
After the third tribulation lightning bolt had descended, the black skies above the stage turned purple. Shortly after, purple lightning descended which ruptured the world of darkness into thousands of pieces.