[Male lead, exploration of another world, pseudo-scientific cultivation, rigorous logic, cultivators vs. immortals]
Chen Chen accidentally wandered into another world and discovered that it had developed from the last surviving sparks of the battle between the immortal and demonic factions on Mount Shu tens of thousands of years ago.
With no spiritual energy in this world, those sparks had developed an alternative path of cultivation.
Radiation causes cancer? That's the correct way to cultivate. When the cancer cells spread throughout your body, that's when you break through.
Gene fusion and mutation are the foundation of a cultivator's power. PS: I'll take the tardigrade genes.
Radiation sources are the cultivators' eternal pursuit. PS: Would nuclear and hydrogen bombs be enough?
Use techniques to guide the cultivation of essence, qi, and spirit? PS: You don't know the orthodox Daoist cultivation methods? I'll teach you.
An indestructible body, impervious to all weapons, is the cultivators' eternal challenge. PS: Ever heard of Prince Rupert's drops?
The Supreme Twin-Cavern Mage: The Dao is born from nothingness as a single qi, and from that single qi come yin and yang. When the twin stars of yin and yang circle each other, that is the highest state of cultivation. PS: When yin and yang unite again, they give rise to three bodies; the rebirth of the three brings prosperity to all things. How about learning about the Three-Body world?