Space Human Race Assembly Order

On this day, the whole world was shaken, and all people between the ages of eight and twenty-three disappeared. Only one sentence rang out in the vast world: "These fellow human race, I have brought them to train, see you again if we are destined." For a time, society came to a standstill. Some parents did not believe it and struggled to find their children. Global high-level cooperation to study the phenomenon of disappearance and the words left behind... Li Chengyu, a freshman who was just about to enter Hainan University, disappeared when he was daydreaming about his beautiful senior students. When I woke up, I found a clean single dormitory. After going out, some people came out of the dormitory one after another, including men and women, children and teenagers. Further forward, there is a huge door, which is a large classroom that can accommodate 1,000 people. The blackboard says: "First lesson, eat." Lesson two, sleep. Lesson three, breathe. After completing three lessons and passing the exam, you will live and enter a higher level. If you fail the exam, you will die and be used as fertilizer on crop fields. Li Chengyu was selected by Blue Star's will to inherit his talent and ability. The human race is in danger, now summon all the races in the starry sky! Human race assembly order! Protect my human race! On the starry sky, there are words composed of meteorites: Protecting the universe is everyone's responsibility. In various galaxies, various human races are cultivating and heading to the battlefield to protect the human universe. Never give up until the last moment. If you keep persisting, I beg you, but also of yourself, if you keep persisting, our human race will eventually win! This is a story about the growth of a young man, full of ups and downs, please read it slowly.