Be Invincible at the Beginning of the Doomsday

When he woke up, Zhang Hao found that he had traveled through time, and there was an outbreak of zombies in this world. The original owner couldn't bear it and committed suicide. He couldn't bear it. How can I bear it? Zhang Hao smiled bitterly. At this time, "Ding" everything in the world has a system to serve you. I knew that I am a time traveler. How can I do without a system? Zhang Hao said happily A semi-cool novel, not a stud, the main character is cold-blooded and not a virgin. This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.