Can't Afford It? in a Fantasy World, You Engage in Black Technology!

With the aura of Blue Star's top scientist, Ye Fan traveled through time! But I was surprised to find that this world is actually a fantasy world! Blue Star's strongest firepower is as weak as a toy! At this time, the god-level research and development system arrived. Shadow Gate: "What I want is a hidden weapon. Do you understand hidden weapons?" Ye Fan: "Are you still playing with hidden weapons? Let's learn about the Gauss rifle. At a speed of 11 kilometers/s, whoever you hit will die!" Heavenly Weapon Sect Master: "Oh no, the Blood Demon Sect has come to attack our sect. Unfortunately, our sect's spirit stone can't even open a mountain-protecting formation!" Ye Fan: "Don't be afraid, learn about nuclear fusion and you will rise in minutes!" When black technologies appear in the fantasy world, many bigwigs are filled with emotion! "Hmm! It smells so good!" This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.