Fantasy: A Portal Through Space and Time in My Mind

Yang Tian transmigrates to a fantasy world, where a portal appears in his mind, allowing him to travel to an apocalyptic world!

Yang Tian originally had terrible talent for martial arts. But after taking a bottle of Flame Evolution Serum in the apocalyptic world, he immediately awakens a talent for fire and becomes a fire cultivator.

Only then does Yang Tian realize, to his astonishment, that the evolution serums sold everywhere in the apocalyptic world are supreme treasures that countless people in the fantasy world dream of, as they can evolve one's talent.

On top of that, the zombie crystals and mutant beast crystals from the apocalyptic world can greatly accelerate the cultivation of martial artists in the fantasy world;

Mutant plants from the apocalyptic world are top-tier alchemy materials in the fantasy world, while the corpses of mutant beasts are top-tier crafting materials...

With the resources of the apocalyptic world to support him, Yang Tian rises rapidly, pummeling prodigies, crushing myriad races, and reaching the supreme peak of martial arts.