(Foreword)

Cold ice can't break the water, and dead wood can meet spring again.

(Text)

"How's that!! I didn't disappoint you, I am the 'mysterious man' on the city wall, so every one of your previous plans has not succeeded, and one of them is my efforts. Hahaha!! The mystery man burst out laughing.

"You've got it !! come out" Cui Li couldn't control it and threw a punch at the mysterious man, but like a holographic projection, Cui Li's attack was completely ineffective.

"I don't have time to play with you anymore, let's see each other on the battlefield of Yiling, seriously, I'm looking forward to your performance!!" The mysterious man disappeared in front of us after saying that. It's like crossing over.

Only me, Cui Li, Lin Yun, and Professor Wu were left in the military tent, and we watched the mysterious man disappear before our eyes, as if they had never been here.

"He just disappeared?" Cui Li hadn't reacted from what had just happened.

"I don't think he's gone, he's back on the walls of Yiling Pass, and it seems that the problems we face are getting more and more difficult." I said.

"So what do we do now? Two days later, it will be the day of the attack on Yiling Pass, but we still don't have a clue, and even the method that we have barely figured out will probably be useless. Professor Wu said with disappointment as he looked at the graphics on the 'blackboard'.

"Damn, I knew there was something wrong with that Professor Twilight. I didn't expect him to be the intruder. Cui Li said reproachfully.

"We don't know, but at least now we finally figure out why our previous plans have always failed, no wonder we always frustrate the 'mysterious man' on the wall, but fortunately we have recognized his identity." Lin Yun said optimistically.

Some of our previous plans were almost able to allow us to capture Yiling Pass, but we didn't expect that the real enemy was in front of us, but we didn't know anything about it. But there is another question in front of us, why the mysterious man can disappear and leave at will. Could he have control over the holographic projection? Could Cui Li and Zhang Xinran's disappearance before that also have something to do with him? There is another mystery in my mind that has not been solved.

"General Cheng !!" Suddenly, a soldier came in at the door and said, "General Cheng!! Two women are at the door who want to see you. ”

Two women? Could it be Zhao Yuhe Li Ruina? There seemed to be hope in my heart again.

"Cheng Yin, it may be Li Ruina, let's go out and have a look." Professor Wu urged.

We walked out of the barracks gate quickly, only to see two familiar figures appear in front of us, it was Li Ruina and Zhao Yuyu. Lin Yun beside him ran to their side even more excitedly, just like a friend who had reunited after a long absence: "I can be regarded as finding you, where have you all gone?"

"It's great to be able to find you, we've really come here with a hard time." Li Ruina also looked very hearted.

"Wait a minute!!" I had to interrupt their conversation: "Are you really Li Ruina and Zhao Miyu?"

"Cheng Yin, aren't they Li Ruina? It hasn't been long since then, why have you forgotten what they look like? Cui Li asked.

"Of course I can recognize their appearances, but don't forget that this is the 'virtual world' of Mr. Ouyang Yu, all we see is holograms, since that mysterious person can become the appearance of Professor Dujiang, won't he pretend to be someone else?" I questioned. At this time, we have to be cautious, and finally find out the true identity of the mysterious person, but we can't be careless.

"Cheng Yin, do you mean that they may not be Li Ruina and Zhao Yuyu in the formation?" Professor Wu suddenly became alert.

"At present, we can't rule out this possibility, we have just revealed the identity of the mysterious person, and in less than a few minutes, Li Ruina and Zhao Haoyu appeared in front of us. This has to draw our attention to the fact that one of them 1 is likely to be the mysterious person just now. My voice was low.

"Mystery man? What mystery man? We are Li Ruina and Zhao Miyu, what's wrong with you? Li Ruina asked.

"Cheng Yin, what should I do? How do we know if they are really who they are? Cui Li was at a loss at this time.

"Yes, if one of them is really the mysterious man, then we will be extremely passive in the future, but it doesn't seem like a good idea to keep both of them out. So we don't have any other way now? Professor Wu also seemed very embarrassed.

"What proof is this, who else can I be if I am not Li Ruina, what is wrong with you one by one?" Li Ruina was a little angry.

"Li Ruina, don't be angry, someone deliberately pretended to be Professor Dujiang before, so he was able to stop our plan again and again. Cheng Yin said this just out of vigilance, don't blame him. Lin Yun explained.

"I see, we can understand that, but how on earth can we prove that we are who we are?" Zhao Yuyu calmly asked questions.

It's not easy to confirm their identities now, and by the way, I can ask questions. Some simple questions will definitely not work, this mysterious person must be prepared, some simple questions will definitely not bother him, but what is the problem to confirm their identity?

"I said, what is your university?" Cui Li's problems have already begun.

"It's too simple, we need a different question, or the mystery man will be prepared." I pondered.

"A different question? I have a headache when I think about it, and I really don't think about anything. The puzzles of the Lost Garden are enough for me, and I can't help the puzzles here, so I think it's better for you to think about it. Cui Li expressed helplessness.

The Lost Garden? That's right! Mine suddenly had a great idea.

"Right!! It's the Garden of the Lost!! Cui Li, you are so smart, Li Ruina, Zhao Miyu, I have a question, if any of you can answer, it means that the person is not a mysterious person, and the person who can't answer must be a mysterious person!! I watched as their expressions changed.

"Cheng Yin, just one question, is it a little too hasty?" Professor Wu asked worriedly.

"Don't worry, that's enough to prove who they are." There was confidence in my eyes.

(End of chapter)