He could survive for so long while fleeing alone, yet he died with the Sorcerer Ancestor's protection instead?
"This is the truth." Ancestor Tianyu shook his head lightly. "Alas, when your master fled with grievous injuries, the Sacred Master pursued and tried to kill him several times, but failed every time. The Sacred Master thought... your master's wounds were so severe that he probably would not survive and would fall, and he was unwilling to pay too great a price. Yet as a Voidwalker, your master possessed extraordinarily tenacious vitality. Over his years of flight, he actually recovered little by little."
"Although the two great sects have three Cosmos Gods between them, only the Sacred Master could truly threaten your master's life. Your master also did not wish to remain on guard every moment, so in the end he asked..."