Is there really time travel in this world?
Or was it just a dream before she left...
Write after the introduction:
1. Some related professional terms appearing in this article may have subjective understandings and are not completely accurate; I have not read the theory of relativity because I can't understand it. The relevant content about time travel is all made up. It seems to have scientific basis, but in fact there is no, so don't delve into it, don't delve into it, don't delve into it! ! !
2. (Single emphasis) Regarding the 600 million light years mentioned in the article: It is generally said that the light year is a unit of distance, not a unit of time, that is, the distance traveled by light in one year. The purpose here is to express that when light travels for 600 million years, the time consumed is enough to travel through time and space and return to the past. Please do not delve into it.
3. This article is set as OE. If you like HE, you can read the following chapters as the main text. If you like BE, just read Chapter 20.
4. The two protagonists have no prototypes and do not want to make any meal replacements.
5. Everything in this article is very sudden, so sudden that I didn't even write an outline, so I may have been a bit unrestrained when writing it, and it ended in a short time.
6. Have fun writing articles and pictures. If you don't like it, just click out~
Intention: Choose according to your own heart