In the original course of events.
Lu Ya was known as the "wandering immortal of West Kunlun." He suddenly appeared on the Investiture of the Gods battlefield, claiming to be neither immortal nor sage, while rumors even said, "Lu Ya predates Hongjun." Every move he made was brimming with pretension...
Yet aside from the Flying Dagger of Decapitation and the Seven Arrows Book with Nailhead, which both shone brilliantly, Lu Ya had few noteworthy moments in direct combat.
When he fought Zhao Gongming.
Zhao Gongming brought out the Golden Flood Shears he had borrowed from the Three Heavens. Seeing this, Lu Ya shouted:
"Excellent!"
Just as Zhao Gongming thought he was about to counterattack, the fellow transformed into a rainbow in the blink of an eye and instantly fled beyond the battlefield...
He left Zhao Gongming gritting his teeth in fury!
It was precisely because Lu Ya could not defeat Zhao Gongming head-on that the Seven Arrows Book with Nailhead came into play. After Zhao Gongming was injured by it, the Three Heavens arrived together and captured Lu Ya with the Primal Chaos Golden Dou.
Then they tied him to a banner pole and beat him mercilessly!
In the end, Lu Ya transformed into a rainbow and fled...
From then on, he vanished from the Investiture of the Gods Tribulation.
However, after the Tribulation ended, a Mahavairocana Tathagata appeared in the West. It was said that the two Western Saints had granted that title to Lu Ya in repayment of karmic debts.
Later, during Journey to the West, the pilgrimage party encountered Zen Master Wuchao, who passed the Heart Sutra to Tang Sanzang. It was said that he, too, was one of Lu Ya's incarnations...
Thinking of this.
Wu Tian could not help chuckling softly:
"This kid really loves showing