if you notice , every time MC came to a new city/planet, MC always show his admiration to skyrise building in the city, even random building have 60-80 floor on it, and you can see at Ch.75 even an ordinary shop of granpa Qian can fit 10 meter mech.so i can asume every building in this novel is ridiculously gigantic, and it became normal for 10meter to stealth around.
