if you notice , every time MC came to a new city/planet, MC always show his admiration to skyrise building in the city,a ramdom building have 60-80 floor on it, and you can see at Ch.75 even ordinary shop of granpa Qian can fit a 10 and 12 meter mech. at Ch 78 there mentioned a building with 800 floor, so you can imagine how gigantic that building is.-so i can asume that is really easy for 10 meter mech to stealth arround in a city with 60-800 floor building.
