Doomsday: Unlimited Upgrade Mobile City chapter 120

Wang Cheng travels through a post-apocalyptic world, where radiation has caused the proliferation of ferocious beasts around the world, and all humans live on various floating mobile cities. [Congratulations to the time traveler for awakening the city master system and being rewarded with a mobile city! Just check in to cities and famous attractions to choose upgrade rewards] As a result, the most luxurious and safe mobile city in the apocalypse was born. [Sign in and check in the ruins of Shan City, Guangnan Province! Please select a reward] [1 Seawater Purification System] [2 Super Power System] [When signing in to the ruins of the industrial park for the first time, please select. 】【1 Mecha Factory】【2 Mobile City Expansion】 [When checking into the cinema ruins for the first time, please select. 】【1 Entertainment Center】【2 Film and Television Center】 [Sign in and check in the second city site, Chao City, Guangnan Province! Please select a reward] [1 600mm caliber light speed particle cannon] [2 UAV factory] At this moment, countless people around the world want to immigrate to Donglong Mobile City, this...