"Impossible!"
"Breaking through to Supreme should only involve undergoing a great self-collapse. How could a lightning tribulation appear?!"
Mu Qing and the others were utterly shocked. This defied all common sense!
Lightning tribulation came from the universe's instinct. It was also one of the methods the universe's instinct used to prevent the strong from advancing.
But lightning tribulations could at most deal with Great Emperors. Beyond that point, there was no need to undergo a lightning tribulation at all—they could shatter it with a wave of their hand!
They could even deny the very existence of the lightning tribulation and break through directly, without needing to endure it.
The universe's instinct also knew that lightning tribulations had an upper limit to their power. They were ineffective against experts such as Ultimate Great Emperors and Half-Supremes, which was why it later created the nine shackles specifically to target Supreme experts.
Yet Xin Rui's breakthrough to Supreme was utterly abnormal. A dignified Half-Supreme had actually encountered a lightning tribulation while breaking through to Supreme!
And the might of this lightning tribulation was terrifying as well—at the very least, it had reached the Supreme level!
Mu Qing hesitated. He wanted to intervene, yet he did not dare!
The lightning tribulation above Xin Rui's head was still gathering power. Its next attack would inevitably be a Supreme-level lightning tribulation strike.
Xin Rui was currently in his aged state. The phantom of the Reincarnation Disk above his head had already shattered after helping him block an attack.
Xin Rui, whose aura was incomparably weak, simply could not withstand the next attack!
"Should we intervene?"
Star Phoenix Emperor's expression was grave. He could see that Xin Rui seemed unable to hold on any longer.
But the process of breaking through to Supreme could not be interfered