Seeing that the audience's attention was almost attracted, Chen Muwu threw out the bombshell that had been prepared for a long time, pointing out that according to the theory of relativity, this kind of time travel can not only go to the future, but also go back to the past.

Sure enough, as soon as he finished speaking, it caused quite a stir in the audience.

The only few stories of ancient China are inseparable from the path of "one day in the sky, one year on the earth", basically what chance is encountered, in a space where time passes very slowly, stay for a while, and after coming out of this space, return to the original world again, only to find that hundreds of years have passed, which is the so-called going to the future.

But no one ever thought that people could go back in time.

Let's ask, who can live a lifetime without a few regrets and regrets?

In the face of regret, the "Analects" said through the mouth of the Chu madman: "The past cannot be admonished, and the future can still be chased";

Zhuang Xin in "Warring States Policy" advised King Chu Xiang: "It's not too late to see rabbits and take care of dogs; It is not too late to make up for the loss of sheep";

Even the former high-spirited young man Wang Bo sighed in "Preface to King Teng's Pavilion": "The east corner has passed away, and it is not too late for Sangyu".

These philosophical words are basically about regret in the past, and since people can't go back to the past, they can only look forward.

For thousands of years, this philosophy of regret has been deeply rooted in the hearts of the people.

But now Mr. Chen Muwu, who is on the stage, suddenly said that under certain conditions, people can go back to the past, how can they not let other thoughts rise in people's hearts?

Immediately afterwards, Chen Muwu, who had just finished painting the flatbread, poured cold water on the audience who had just become enthusiastic.

He pointed to the cylinder drawn on the blackboard before and told everyone that this kind of time back to the past is theoretically achievable, but it has to meet many specific conditions, such as enough energy, fast enough, etc., and the current level of human science and technology is not enough to achieve.

Boring theoretical knowledge, just talk about one or two sentences, the audience doesn't like to listen to it too much, and he is easy to show timidity on stage.

Fortunately, Chen Muwu's level of control was good, and he next asked the audience a question that basically had nothing to do with physics.

"Perhaps there have been a few people in our history who have traveled back in time through the afterlife, and they did not reveal their identities in order not to cause trouble for themselves, but we can still detect some clues from their actions. Please think about it, in your memory, are there any qualified ancients? ”

This question made the noisy discussion in the audience louder and louder.

Even Mr. Lu Xun closed his eyes and frowned slightly, as if he was carefully retrieving his knowledge reserves.

After a long time, the audience still didn't discuss anything, so someone shouted in the audience: "Mr. Chen, we really can't think of such a person, why don't you give an example!" ”

Chen Muwu cited the examples of Yuan Tiangang, Li Chunfeng, Shao Kangjie and Liu Bowen, saying that they were able to write "Tui Bei Tu", "Plum Blossom Poem" and "Song of Baked Cakes", and it is very likely that it is not because of their clever calculations, but because they come from the future, so they can know the development of future generations.

He stopped here, not daring to say it too absolutely.

Chen Muwu was very afraid that if he talked about it out of control, he would be branded as a "scientific god" and attacked by a group of real people of insight.

Especially the fellow with a mustache in the audience, before he frowned, he had to change the topic quickly.

He didn't want such a classic scolding sentence to circulate on the Internet in later generations, from the article scolding him in "The Complete Works of Lu Xun".

But the more mysterious he became, the more people in the audience felt that what he said made sense.

Just a week after Chen Muwu's last lecture, there will be a debate between science and metaphysics in the academic circles.

This controversy was the first collision between materialism, which had just emerged in China, and idealism, which was deeply rooted in the hearts of the people, and it lasted for two or three years without a winner.

And people are already keen on these prophecies, and now with the "scientific explanation" made by Chen Muwu, they are even more convinced of this.

Chen Muwu's lecture was completely out of the orbit of physics, but the effect was surprisingly good, because he raised the next question for the audience to ponder.

If humans could eventually build a time machine that could quickly and easily travel between the past, present, and future, where would you most be? Why?

Where to go?

It's definitely going back in time.

What can you do when you go back in time?

Of course, it is to avoid regrets in advance!

Otherwise, why is there a lot of time-traveling and rebirth articles (including this article) in the online articles of later generations, but the science fiction articles describing the future world are less than one-two of the former?

Of course, the situation is very different now, because before Chen Muwu's lecture, people never knew that there were theories that could support human beings to go back to the past, so there were more science fiction novels that went to the future.

In 1902, Liang Qichao wrote "The Future of New China", which predicted 60 years later, and in 1908, the owner of the Bihe Pavilion also wrote "New Era" imagining the national situation in 1999.

Among them, the most classic should be in 1910, a fantasy novel written by the novelist Lu Shimo called "Forty Years After the Constitution".

The general content of the book is that a Qing Dynasty man traveled to the sea of Xuantong in the forty-third year of Xuantong (that is, in 1951) in a drunken daze.

At that time, the concession had already been recovered, the train was connected to Beijing and Shanghai, the houses were lined up one after another, people walked on the wide road, and a large iron bridge crossed the Huangpu River and was built directly to Pudong on the other side. In order to facilitate the visit to the "Expo" held in Pudong at that time, a cross-river tunnel was built, a subway was built, and so on.

In addition to the error in time and the wrong prediction of the life span of the Qing Dynasty, his novel is so accurate in predicting future generations that many people think that the author Lu Shimo is actually a time-traveler.

Chen Muwu's words aroused deep thinking from an audience member in the audience.

This person is not an outsider, it is Zhang Xinyuan, a reporter from Yishi Daily.

Don't look at his real name and not be famous, that's because he also has a well-known pen name called "Hate Water".

Zhang Hatshui was not famous at this time, and only worked as a small editor under me in Shaojing's "Yishi Daily", occasionally going out to run the news.

Because he learned that the American Minister Shulman was going to Shaoda to listen to the lecture, he also followed him to the lecture site today, but he did not expect to see Chen Muwu standing on the stage.

When the old people met, not only Chen Muwu was startled, but Zhang Hatshui was also stunned.

Isn't this the person who ran to the editorial department a few times and submitted "The Legend of the Condor Heroes"?

Although he said that he was showing up for others, and the real author of the novel was Ms. Yao Fulan, Zhang Hatshui did become more and more convinced that this book could not be written by a lady after reading the novel.

Now seeing Chen Muwu talking about the hottest and most popular science on the podium of the Shao Da Auditorium has confirmed Zhang Hatshui's judgment.

No wonder he wanted to use a fake name to contribute, it turned out that he was not revealing his identity for fear of embarrassment!