Downstairs in the family courtyard next to Huaxia University, you can hear Ding Beihai's roar.

"I really didn't expect you to sell the house!" Ding Beihai clenched his fists, ignoring the scared expression on his mother's face and his father's disgusted expression, and continued to yell, "And you have moved to this place for more than half a year, but you have never told me!" At least let me help move some furniture! Have you ever considered how a son feels? Mom, you don't have a good waist, and your dad has a bad heart, why don't you tell me? Don't say anything in order not to delay my research in science, it's too naïve! ”

"Beihai, you calm down first......"

"How do I calm down!" Ding Beihai said almost frantically, "Both of you are retired, and you still provide me with food and clothing, but my son has been kept in the dark, am I still human!" ”

"Beihai, don't be angry first, your father has a pension, and he can have a lot of it a month."

"Mom! ......" Ding Beihai sighed and shook his head, the anger in his heart didn't know where to go, "Mom, everything you and Dad have done for me, son, I can only say that I will never forget it in my life!" ”

Since that day, Ding Beihai's relationship with his parents has been much more harmonious.

……

The prototype of the Time Shuttle has been designed, like a crooked wine barrel or a giant water tank.

In order to speed up the progress of research and development, Ding Beihai instantly fell into busyness, getting up early every day, working day and night, and sometimes he didn't even have time to eat.

During this period, my mother also came a few times, because the rented house is not far from the research institute, so I often come to see if there is anything to do.

And every time the mother came over, she saw most of the son's busy back, and she didn't have time to speak. The mother put the carefully prepared stir-fry on the table and beckoned Wang Shiman to come over.

When her mother saw Wang Shiman eating so happily and smiling so sweetly, she would be satisfied with the sentence "Girl, I will bring other delicious food over tomorrow" and then got up and went home.

Every time her mother came over, she would tease Wang Shiman, calling her her her "daughter-in-law". Later, in order to please him, Wang Shiman smiled and laughed. When I graduate in three years, I may be innocent.

In the boring repetitive experiments, time flies, three years, and soon arrives. Although it is still early to develop the time shuttle, the basic theory has been preliminarily determined, and the rest is confirmed by a large number of experiments.

It's another summer night, and everything looks like it was four years ago.

The 10,000-person auditorium of Huaxia University was once again full.

Ding Beihai, as a graduate supervisor, sat in the first row. And sitting on his right is none other than Ding Beihai's mentor, Sir Eddington.

Sir Eddington held his head high, ignoring Ding Beihai's outstretched hand.

It seems that this stubborn old man still remembers the "disobedient defense" back then.

Ding Beihai smiled helplessly and looked at the podium.

Soon, it was Wang Shiman's turn to defend. Wang Shiman's defense thesis is the "development and application of time shuttle" told by Ding Beihai that year!

The eyes of everyone present were the same as they were four years ago, and they were full of surprise, shock, and fear.

Ding Beihai shook his head, under the "strict teaching" of their supervisors, these graduate students seemed to be just problem-solving machines, and they had no innovative insights of their own.

"Hello teachers, students, I am a graduate student of astrophysics in the School of Physics, Wang Shiman." Wang Shiman wore a proper research robe, which set off the original delicate figure more perfectly, she was quiet and elegant, and her handsome face was full of confidence, "My tutor is Lecturer Ding Beihai, and the topic I studied is also the practice and application of the time shuttle that Teacher Ding has already proposed, and the following is my defense session." The preliminary introduction is exactly the same as Ding Beihai's introduction four years ago, and after a brief introduction, Wang Shiman elaborated on the progress of research with Ding Beihai and Wang Xinyu in the past three years, "After a large number of our experimental data, the existence of time particles has been preliminarily determined!" As we all know, the speed of any matter cannot exceed the speed of light, which is the most basic common sense, but guess that if a car is driving with the lights on, the light emitted by the lights is not added to the original speed of light? When the speed of matter is infinitely close to the speed of light, its mass becomes infinite, which means that it is difficult for matter in reality to artificially reach the speed of light. However, only 4% of our universe is known to matter, and most of the rest is dark matter and dark energy. My mentor and I accidentally found a dark matter that was invisible to the naked eye during a particle whirling experiment. ”

Wang Shiman was talking endlessly on the podium, and the audience, contrary to the reaction four years ago, everyone was listening attentively. I don't know if it's because I can hear it, or because I'm just attracted by Wang Shiman's beauty.

Just as everyone was intoxicated by the wonderful world of astrophysics and physics, Sir Eddington suddenly stood up, slapped the table, and rushed to the podium.

Everyone was shocked and watched in amazement as Eddington made his every move on the podium.

Sir Eddington snatched away Wong's paper, and just as he had torn up Ding Beihai's paper four years earlier, it was once again torn to shreds under the gaze of the public and the media.

"You're insane!" A teenager in the field scolded and rushed up, kicked over, and scuffled with Sir Eddington. And this teenager is another student of Ding Beihai, Wang Xinyu.

There was chaos on the field, and there was chaos off the field, as if it was a pot of porridge......

Seven days later, Wang Xinyu was deprived of his master's degree from Huaxia University for beating a teacher and was blacklisted by the school; Wang Shiman was asked to revise his thesis, otherwise his degree certificate would not be granted.

Fortunately, the institute was not confiscated because of this. This made the big stone in Ding Beihai's heart fall to the ground temporarily.

……

Ding Beihai Research Laboratory, Huaxia University.

Ding Beihai was comforting Wang Shiman, who was still sobbing.

Wang Shiman wiped away the tears from the corners of her eyes and asked unwillingly: "Teacher, why are they just unwilling to admit the possibility of time travel?" If they can't do it themselves, can't anyone else do it either? Isn't this kind of behavior any good for the development of human science? ”

"Shiman, you still don't understand." Ding Beihai sighed. In fact, the opposition in universities is not the highest. The biggest resistance comes from political pressure and humanistic morality.

Assuming that the time shuttle is really developed, what will happen if someone travels back in time through the time shuttle? He can write down the numbers after the lottery is drawn, take a time shuttle back a few days, buy the ticket, and from then on, he will be a billionaire; He can even appear in front of his parents before they get married, and bridge the two, but no one can give an answer to what the consequences will be.

If time travel is really successful, then both the future and the past will be affected to varying degrees, which is undoubtedly a threat to the real world.

"Teacher, maybe this road really doesn't work, right?" Wang Shiman stood up and bowed in front of Ding Beihai, "Teacher, I'm sorry, please forgive me......"

"It's okay, you don't have to blame yourself." Ding Beihai waved his hand, looking indifferent, "I will always stick to this road, but your future is still very broad, and you shouldn't hang yourself on this tree with me." You should still get a master's degree certificate, and the teacher is here to sincerely bless you! ”

"Thank you, teacher! Thank you, teacher! ”

Ding Beihai looked at Wang Shiman's departing figure, but he felt very uncomfortable.