Magic Lord: My Wardrobe Connects to All Worlds

When Su Cheng, a master of geophysics, used scientific thinking to analyze magic and became the youngest grand mage in the empire, he thought his life in another world was legendary enough. Until he heard a strange noise coming from the old wardrobe in his bedroom—— What is connected behind the door is actually thousands of parallel worlds. What's even more unexpected is that his "girlfriends" from the parallel world came one after another: A martial arts master who strikes the wind with his sword, a nine-tailed banshee who enchants the common people, a predator who runs rampant in the zombie apocalypse, a cold immortal who has reached the sky... Their identities are very different, but they are all his girlfriends or wives. And when Su Cheng was able to step into their world and bring back technology and power from other worlds, the small earldom began to shake the entire empire, and even the entire continent—— What amazing truth is hidden behind this magical kingdom?