Physics Gu Master: I Use Science to Beat the Cultivators

I, the physics teacher, transformed into the most useless Gu Master in the world of immortality. The cultivators sneered: "Gu way? Heretic!" I took out the Friction Gu with my backhand, and Elder Nascent Soul fell to pieces on the spot. They use magic, I use electromagnetic gun. They make flying swords, and I make gravitational fields. When the ancestor of the cultivation world broke through the barrier, I smiled slightly and released the ultimate Gu—— "Two-way foil Gu, dimensionality reduction strike, do you want to know about it?" Later, the entire cultivator community knelt down to listen to my lecture on physics.