After Re-Training on the Full-Level Tuba

Cheng Yan has been a zombie for many years. He has been upgraded from a zombie to a zombie king since he was a child. When he was about to reach the full level, he suffered a headshot. When he opened his eyes again, he was reborn as a human being with the same name. Good to die, this human senior brother is the strongest human being, Qi Jianrui, who blasted his head. Now this shell is not only a weak human being, but also turned into a little gray mouse that everyone in the base looks down upon because it cannot hold Qi Jianrui's thigh and hugs him hard. The body is thin and the house is bare. When thieves enter, they will curse you for being so clean. Once he started working again, Cheng Yan found himself miserable and looked down upon by countless people. The sworn enemy who shot him on the head was able to stand high and be admired by countless people. Cheng Yan: I can't stand this arrogance! Then find a way to take revenge and kill your mortal enemy! * Cheng Yan has a strong desire for revenge. But the revenge hardware is far behind. Cheng Yan has the following two paths to take: 1. Charge directly. Whether or not Qi Jianrui will die depends on luck. Take a gamble. Maybe Qi Jianrui will be undefended, and he will get revenge by killing him with a knife. 2. Accept the base mission honestly, go out to fight zombies and dig crystal cores to earn contribution points, upgrade again, and kill Qi Jianrui after you get promoted. Cheng Yan chose option two. He promised that if he chose one, Qi Jianrui would turn him into a charcoal roast without even exposing the whole knife. * Cheng Yan actually has a third way to go. In order to kill the zombie king, Qi Jianrui paid a huge price and suffered sequelae. He developed an inexplicable enthusiasm for Cheng Yan's blood. After losing control of Cheng Yan for the first time at the base, biting his neck and sucking blood, Qi Jianrui wiped the blood from the corner of his mouth and stood up, saying coldly: "Don't mention this to anyone. I will give you a reward. Tell me what you want." The young man lying on the ground sneered: "Okay, I want the crystal core." ​At first, this was a mutually beneficial transaction. But gradually, Qi Jianrui didn't want to stop at trading. Later, the young man who had been cooperative suddenly turned him away. Qi Jianrui knocked on the door, breathing heavily and messily: "Help me." Cheng Yan smiled broadly: "Please." Qi Jianrui raised her head, stared at him, and said restrainedly: "Please." * Before becoming a zombie, Cheng Yan was once a famous human leader. Countless people admired him, loved him, and followed him. Until his unexpected death, they had to go their separate ways with unwillingness and resentment. When they discovered the traces of the leader's return, the followers who passed by were all ecstatic! They rushed to the base as quickly as possible, hoping to invite the leader to leave with them. But they found a mountain of corpses outside the base, and a huge number of high-level zombies that they had never seen before were squatting outside the city with eager faces. Humans and zombies looked at each other. ! ! ! No one can compete with us to become the leader/king! Cheng Yan: Orz is too successful every time he starts a business and is approached by his old team. What should he do? The friends at the new base hugged Cheng Yan's thigh: Boss, don't abandon us! Purpose: stick to the original intention