Fight the Zombies to the End

One day, the zombie virus broke out and spread rapidly, centering on Xu Xiaobai's city. Xu Xiaobai, an ordinary office worker, likes running and fitness, and practices Sanda when he has nothing to do. He is a very calm person, but when he opened the door and saw zombies, he was instantly confused. Fortunately, he has a zombie world survival exchange system, which can be exchanged for blades, sabers, pistols, AK47, Chicago typewriters, Gatling, motorcycles, Alto, Ferrari, martial arts secrets, special physiques, rocket launchers, superconducting railguns, tanks, J-20, atomic bombs, neutron bombs, proton bombs, Iron Man... With the system in hand, the zombies bow their heads, the doomsday is approaching, and I'm walking sideways!