City: I Have Magical Props

What will happen if you have Doraemon's magical props? Any door can take you to any corner of the world, whether it is within the Aqua Blue Star or a planet outside the universe, you can reach it instantly by opening the door. With a time machine, you can go back to the past and travel into the future, and see your past self. Do you want to change your past self? Does having a time package mean you can live forever? It all started when one lucky guy got a fourth-dimensional pocket. Will Zhang Yan, who has countless magical props in his hands, become an ancestor who does not eat beef? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.