The Strange Invasion Begins with Dragon Ball

[Original plot + strange invasion + no system] Book: Please believe in the rules unconditionally and abide by them! When he woke up, Zhao Yu traveled through time and became Trunks in Dragon Ball. There was a piece of paper in front of him with crooked rules written on it. 1. From now on, please remember that you are Trunks, and please do not make strange actions that are inconsistent with Trunks' image. 2. Dragon Balls do not exist in the world, do not try to find Dragon Balls! 3. Vegeta has died in the battle with the androids, Sun Wukong also died of viral heart disease, Sun Wutian does not exist at all! 4. If Goten comes to play with you, please don't refuse any of his requests. 5. Find the time machine, that is the hope of escaping from here! 6. Sun Wuhan realized his dream and became a great scholar, but he is always unhappy. Please find the orange-red martial arts uniform and give it to him. He will thank you and help you escape. (If he wears black martial arts uniform, please stay away, that is not Sun Wuhan!) 7. Bulma in this time and space has not studied time machines. If she talks about time machines, please escape from this time and space immediately! 8. The current rules will only take effect in this time and space. Time is running out. Please escape from here before all time and space are destroyed! Just when Zhao Yu was thinking, a strange laughter came from the window, Wutian is coming to find you!