Great Qin: The T-Virus Helps Qin Shi Huang Achieve Immortality

One day, Ying Wudao's soul transmigrates into the Great Qin Empire. He thought he could enjoy a carefree life in this new life. But who could have guessed that this world would have zombies? The apocalypse is coming? Zombies are besieging the city? Ying Wudao says, “Father, an immortal appeared in my dream and told me the secret to eternal life lies at the source of the zombies!” Ying Zheng declares, “I will fight my way through the zombie hordes! I swear I'll obtain the secret to eternal life!” The generals shout, “We swear to follow Ninth Prince to the death!” When Ying Wudao leads a million elite Qin soldiers to the source of the zombies, they discover that the place holds a whole new world. It turns out to be somewhere familiar to him... P.S. I'm not great at writing blurbs, so please head to the main story.