After returning home, we sent a rough message to Mei Feng and Ye about Yu Yan's foot injury, and we didn't say a word about Yu Yan's 43 years old.

I don't really care about the fact that Yu Yan is now 20 years older, I can continue to develop according to this trend, and in another 20 years, I will only be in my 40s, and Yu Yan will already be an old man, even if I don't mind, what about Yu Yan? Thinking of this, I made up my mind that I must ask Professor Qin for help, maybe he can help us in some way.

I found the hospital's website and found Professor Qin's contact information, and I started trying to contact him.

"Professor Qin, hello, I am the girl who went to your hospital today to show my friend's feet, my name is Ye Xingyan, since you already know that we are not from this time and space, I think you also have many special stories, can we talk about it together when we have time?"

After one-click sending, there is a long wait, one, two, three days...... There was no news.

Is there a problem with this contact information? No, this kind of thing that appears in the public eye is generally not wrong. I guess I'm too busy at work, otherwise I'd just go to the hospital to find him. Just thinking about it, suddenly the phone prompt sounded.

"Okay, I'll send me an address, you can come here to find me!" Professor Qin replied.

I followed the address to a villa, and as soon as I stood at the door, I heard "Di, hello ma'am, Professor Qin is already waiting, please come in!" "The sound of a gentle robot welcomed me through the door, and after entering, it led me into a door, and when I pushed the door open, I saw something like a space capsule standing in the center of the room, surrounded by all kinds of equipment and bottles and cans, yes, this is Professor Qin's laboratory.

"You're here!" Professor Qin's slightly magnetic voice broke my surprise, he walked towards me in a white coat, followed by him....wait, how is it Yu Yan, I read it right, how could Yu Yan be here?

"You two are really interesting, how about you both contact me? Look at your look of surprise, you didn't know he was here? Professor Qin said.

"Uhh

"Xingyan, how can you..."Yu Yan also looked slightly embarrassed.

Because we once agreed not to deceive or conceal anything, we must let the other party know if there is any problem, which is our common tacit understanding together. However, today, without telling the other party, he made a private appointment with Professor Qin.

"Okay, stop standing, I think you're trying to figure out if your 43-year-old body can go back to 22, right?" Professor Qin said.

"Hmm!" We both nodded at the same time.

"Come here!" Professor Qin broke this embarrassment and beckoned us to come to a bunch of electronic components, and some curves began to appear in the air in front of his forehead, as well as various data, Professor Qin pointed to these things and said, "Yu Yan, you are a computer student, you should be able to understand these data, you are because of the confusion of time and space or were called into this time and space by Ye Xingyan, so in other words, you are the black household of this time and space, just like some children without ID cards, understand?" What you don't need to accept is to have an old body and a mind that has been trained for at least 21 years, that is, when Ye Xingyan is in his forties, you are already in your 60s, and this cannot be changed, unless you return to the time and space where you should have existed, so that you can be yourself! ”

Although I didn't understand the meaning of Professor Qin's string of data, the last sentence was heard very clearly, back to the time and space where we should have existed.

"How can I go back? In fact, I have been researching ways to go back in the past few years, I have seen many cases of time travel, but there is no time travel in a specific year, it is possible that we will not necessarily go back to the year we came, and it is possible to go to another year. Yu Yan said.

"Yes, I understand your concerns, and I'm an example." Professor Qin suddenly glanced at me and then turned his head to look in the direction of the strange head, and continued, "You must be very curious about my story, in fact, in my time and space, I am already in my fifties, so like these achievements in academic circles now, in fact, I have already done it in that time and space, I changed time and space, came to the time when I was 16, and then used my 50-year-old brain to live a 16-year-old life, this is not a big cut above my peers?" However, I changed the course of my life and the chances of meeting her. Speaking of this, he stopped suddenly, Yu Yan and I were listening attentively, seeing Professor Qin's expression, and vaguely felt that she should be a very important person to Professor Qin, I couldn't resist my curiosity, I quietly asked, "She must be very important to you, right?!" ”

"Well, she's my wife, but she's dead, but I've developed a cure for her terminal illness, but unfortunately...... She was already gone by then, so I thought that time traveled to a long time ago, we met, fell in love, and went all over again, and even if she was still sick, I had the ability to save her, but unfortunately...... When I met her again in this time and space, we couldn't fall in love, and I watched her marry someone else, someone who was similar to the original me. Professor Qin's eyes turned red, as if he was telling someone else's story. We were all silent for a while, and we didn't know how to comfort Professor Qin, as if it would be superfluous to say anything at this time.

"What we need to study now is the time travel of the specified year to ensure that you return to the era when you came." Professor Qin suddenly broke his silence and continued, "My research a few days ago has already yielded some results, is there any specific opportunity for you to come to this plane?" ”

Yu Yan and I glanced at each other and said in unison, "Persimmon tree!" ”

Yu Yan further explained: "There is a magical persimmon tree...... Yu Yan told Professor Qin the story of our relationship with the persimmon tree.

Professor Qin then said: "According to what you say, then this tree should have grown in the gap between time and space, but unfortunately the tree was cut down, but do you remember the specific location?" Take me to see it! ”

"Now?" I hurriedly asked.

"yes, or not? Time is of the essence! Let’sgo!” Professor Qin said as he took off his white coat.

At the urging of Professor Qin, Yu Yan and I took him to the persimmon tree in front of our high school, after the tree was cut down, I rarely came here, and I went to the city where I went to college, and I almost forgot about this elf that indirectly summoned Yu Yan.

The tree is only a stump, and the rings are still clearly visible under the baptism of wind and rain, but its vitality is really vigorous, and the new inner buds growing in the corners are infinitely green, and it is really magical that the cold winter has not made it retreat from that green.

Professor Qin squatted on the ground, gently stroked the new green inner buds with his hand, and asked, "Persimmon trees usually lose their leaves in winter, right?" It hasn't started spring yet, how can its inner buds grow? ”

"yes, so it's fine?" I said half-jokingly.

"So it may not be a tree in this plane, it may not be winter at its time!" Professor Qin said.

Yu Yan said, "So can this tree help us go back to the past?" ”

"Looking at the strange tree, it should be our breakthrough," Professor Qin said as he plucked the young leaves of a tree, "Let's go back!" ”

Professor Qin brought the picked inner buds back to the laboratory to analyze the synthetic trajectory of the inner bud cells, and preliminarily concluded that the tree may be experiencing summer.

Professor Qin embedded the cell memories of the sprouts into the chip of the strange head, intending to let the strange head travel through time and space to see if he could find the time and space about the growth of the tree.

The strange head was commanded by Professor Qin into the big bird's egg-like space capsule, Professor Qin debugged this kind of data, and after a while, he saw that the strange head in the space capsule was gone, leaving only a transparent screen squeaky like a leaky wire with a little spark bursting, which lasted for about 3 minutes, the picture suddenly became clear, and what caught my eye was the stump that was cut off, but it was surrounded by muddy paths, the roadside was low-lying, there was a large wheat field, and about 30 meters from the tree was a building. The iron gate was closed, and four red advertisements hung on the top, which read: Arrive at school on time.

Yu Yan and I looked at everything this familiar, and our emotions were intertwined with surprise and excitement. With the perspective of the weird head, we see what this plane should be like for us.