The terminally ill patient, Luo Yuan, had obtained the system by chance.
Moreover, it could provide him with a chance to reincarnate. Because he was a history enthusiast, he had transmigrated to the Zhenguan period of the Tang Dynasty.
However, he didn’t expect to encounter an accident when he transmigrated. Luo Yuan died immediately. To make up for it, the system turned Luo Yuan into an immortal zombie.
When Tuyuhun invaded, the imperial court ordered every household to send a able-bodied man to the front line.
In order to repay the old couple who had adopted him, Luo Yuan led 100 villagers to join the army and went to the front line of the battlefield.
After a battle to the death, all the soldiers behind him died. In the end, in order to save them, Luo Yuan turned them all into zombies.
When an undying zombie army appeared and swept across the battlefield, Fei Lu would be invincible.