The Emperor's Painted Skin Cultivation

Waking up as a starving 'Emperor' in a four-room stone cage, Li Wuxiang's transmigrated mind was a shattered mess, his 'subjects' skeletal remains. He was a mere puppet in a twisted game, constantly observed by a terrifying 'God' whose cruel experiments bordered on madness. Yet, as his true consciousness returned, so did a terrifying secret: his very essence, his bodily fluids, were poison to the 'God's' true form – a fragile, painted skin construct. He wasn't just an 'External Evil'; his unusual body was a living weapon, capable of strange self-maintenance and destruction. After a brutal, desperate battle, the 'God' was destroyed, the prison door opened... only to reveal not freedom, but a world consumed by fiery ruins, an endless apocalypse. This 'Emperor' had escaped his personal hell, only to find himself the last living soul in a global inferno. But what chilling secrets did his new, lethal 'Painted Skin' body hold about this desolate new reality, and the true purpose of his unique existence?