Lin Fan, a programmer, died suddenly due to staying up late for a long time and accidentally traveled to Krypton. Before he could adapt, Krypton was destroyed, and the explosion ripped apart the turbulence of time and space. He managed to survive, and finally fell into the Marvel world.
In this new land, Lin Fan unexpectedly discovered that basking in the sun could make him stronger.
Since then, a being who relies on sunlight to pave the road to invincibility has emerged in the Marvel world.