National Jiuyuanxu: I Went Crazy Using the Sign-In System

[Survival] [System Flow] [Farming Article] [Upgrade Flow] The sky was torn apart, and seven billion people around the world fell into Jiuyan Ruins. When I woke up, the familiar city turned into a boundless forest. Everyone can only rely on an ancient bronze seal to survive in this desolate land. Build a shelter, search for supplies, and resist monster attacks. If you are not careful, your body will be gone. This is a paradise for monsters and a hell for humans. There are no rules, only the law of the jungle. You never know, the fatal murderous intention may come from monsters, or even more likely from former compatriots. Kendo player Su Yubai, in addition to the ancient bronze seal that everyone has, also unexpectedly received an exclusive sign-in system. [Sign in successfully and obtain "Sword Sutra (Level 3)", the reward has been stored in the system space] [Signing in successfully, you will get "Na Qi Jue (Level 3)", and the reward has been stored in the system space] [Sign in successfully and obtain "Moon-breaking Bow (Level 2)", the reward has been stored in the system space] ... While other survivors were still fighting for a mouthful of water, struggling for half a piece of dry food, and even becoming the rations of monster beasts. Su Yubai has already relied on the sign-in system and mastered the killing swordsmanship to defeat all evil spirits. He has a decisive nature, is not holy, and does not procrastinate. If others do not offend me, I will not offend them. If someone offends me, I will eradicate them! As we go deeper into Jiuyuan Ruins, we find that things are far from simple. The shocking secrets of the ancient bronze seal gradually emerged. This world has never been a simple survival game. Darkness has fallen, and the world is in chaos. He used the sword in his hand to kill all the evil spirits in the world, and carved a bloody path for the human race on the ruins!