Time Traveling Accelerator

Yang Qi had nightmares for 13 days in a row. He knew that this matter was not that simple! After waking up from hibernation, he rushed to save the world. By chance, he discovered that dreams seemed to be a very strange thing. Why didn't other civilizations? Why do only humans have dreams? Only after he reached the two-star civilization did he discover what the dream was. It's a pity that we will never see that day again. Every civilization will be destroyed in the struggle. It's a sad story, we can't fight the circumstances, we can't even ask for help.