The Transcendence Holy Tree that truly existed in history was a supreme divine object which had created the Transcendents, Celestials, and Infernals. The imitation that was imprecisely produced on the seventh level of the Nine Revolutions Transcendental Tower could not be compared at all. Under Shi Xiaobai's poison resistance and 'This Turtle Is Hardest', the poison from the counterfeit holy tree was not a poison but a tonic for Shi Xiaobai.
However, the 'Holy Tree Sin Poison' that erupted after the backlash from the Transcendent King's heritage power was the real poison of the holy tree. The toxicity was terrifying beyond imagination! Even after 80% of the poison had been reduced through his poison resistant body, the remaining 20% was still fatal for humans!
Shi Xiaobai's organs, limbs, and blood vessels were being encroached by the black poison as his skin turned black. His vital organs instantly fell victim and his cells rapidly died.