MTL - I Have a City in a Different World

Unlimited opening, unlimited power! The mutated mobile phone has a magical app download! All kinds of buildings, can rise to the sky, can sneak into the sea, can be hidden… hidden secrets of the big! Tang Zhen’s ability to build a city is… Building a city, playing with explosives, crushing the ground and grabbing the ground. Tang Zhenduan sits on the top of the mountain, and at his feet is an endless floating city, guarded by dragons, surrounded by angels, and countless giant guns stand in the sky! In the depths of the ocean a million miles ahead, it is another big 6-level building that is waiting for his conquest! - Description from MTLNovel