Lu Ziming had no place to escape, but he could go back to the stairs, but on second thought, he directly met him.

"You are...!" the old man looked at Lu Ziming in surprise.

"Don't shout, or I'll kill you." Lu Ziming reached out and covered the old man's mouth. He didn't want to kill the old man. He just wanted to frighten him: "what do I ask you? Answer honestly. Do you hear clearly?".

The old man nodded his head, and the surprise in his eyes was more than fear.

"Are there two foreigners named David and aidita in your laboratory or in the whole military camp?" Lu Ziming was afraid that the old man didn't hear clearly: "aidita is a woman. She is pregnant and is about to give birth. They are sent by the United Nations to North Asia for investigation and research, one studies geophysics and the other studies Botany...".

The old man shook his head. Lu Ziming covered his mouth and couldn't speak.

Lu Ziming reluctantly let go of the old man and said, "do you know me?"

The old man pointed to Lu Ziming's face and said, "your portrait is pasted all over the streets of hacheng. I didn't expect you to sneak into the military camp?" in hacheng, Lu Ziming is about to catch up with the superstar. It's hard not to remember the reward of 100 crystals.

Since he knows himself, he is too lazy to talk nonsense. After all, he has a bad reputation. He says he is a good man. It is estimated that he doesn't believe: "where are my things? Don't say you don't know!"

"Your things are in there. Come with me," the old man said.

Lu Ziming hesitated and followed the old man in. The laboratory is very large. It is separated by countless equipment. You can't see the head at a glance. Pipes of different sizes are as dense as cobwebs, making you dizzy. He followed the old man through the huge equipment and finally came to a small room.

When he entered the small room, he saw the useless ancestral stone mill on the table, took a few steps to the table, picked up the stone mill and put it in his backpack.

"Wait a minute", the old man reached out his hand and stopped Lu Ziming, wondering, "is this really your thing?"

"What do you mean, it's not mine, is it yours?" Lu Ziming's voice became gloomy and cold: "do you want to stop me?"

The old man didn't seem to be afraid of Lu Ziming: "no, no, no!" the old man shook his hand and said, "listen to me, this thing is very magical. It shouldn't be an ordinary thing. Can you lend it to me for research?".

"Lend it to you, did I hear you wrong?" he looked at the old man in front of him and felt angry and ridiculous. There were such people in the world. It was justifiable to borrow other people's things, as if they owed him. "Why should I borrow you and give me a reason?"

"Borrow it", the old man impolitely grabbed the stone mill from Lu Ziming and put it on the table. He reached out to pick up the hammer next to him and was about to hit it.

Lu Ziming suddenly grabbed the hammer in the old man's hand. "You're crazy. This is my ancestral thing. Your life is not worth it." his words have no confidence. He knows very well whether the stone mill is worth money. If it was really worth money, it would have been stolen from the ancestral hall. It is precisely because it is not worth money that it is kept today.

The old man wanted to grab the hammer from Lu Ziming, but he was not as strong as his hand, so he had to say, "since it's yours, do you know what material it is made of? Do you know its physical characteristics? Go, go, go! I don't understand anything, and dare to say it's yours.".

He really doesn't know what material the stone mill is made of. He feels very light. It's because it's very light that he takes it with him. If it's too heavy, it's estimated that he'll stay and hide.

The old man grabbed the hammer in Lu Ziming's hand and smashed it hard at the stone mill. It seems that the old man usually does the same action.

The old man hit the stone mill one by one. Lu Ziming's heart picked up with the hammer, for fear that the old man would smash the stone mill at once.

When the hammer hit the stone mill, I didn't see the expected fragmentation, nor did I hear the crisp sound of the impact of heavy objects. It was a bit like the dull sound of the hammer hitting on the plastic. The stone mill was still beating on the table.

"What's going on?" he never thought about experimenting with the stone mill.

The old man seemed to be in a state of excitement. He grabbed the electric drill from the side and drilled on the stone mill. In addition to the sour "squeaking" sound, the stone mill didn't respond at all, not even a bit of debris fell.

"See, this is not ordinary material," the old man said confidently.

"Who are you?" Lu Ziming looked down at the ID card on the old man's chest: Zhang Yechang, male, 56, doctor of material physics.

"Young man, do you know what the stone mill in your hand is?" the old man didn't have any consciousness of being a hostage. Like the old professor scolded the students, "you steal lotus mirrors, but you throw away the most precious things on your body. If lotus mirrors are the best, the stone mill in your hand is the best of the best." Zhang Yechang said, and then dropped a few drops of aqua regia on the stone mill, There is still no chemical reaction.

"The best of the best", I heard right. A stone mill that seems useless has become the best of the best among the old people.

The old man sighed, "the lotus mirror is just the hardest thing, but do you know what it means to turn the hardest thing into the softest thing? That's what God can do, cough...! young people don't know anything. They don't even know the best, which is a waste of their ancestors.".

Lu Ziming was one and two big. He looked at Zhang Yechang with confused eyes and said, "what material do you say he is made of?"

"I don't know!" the old man shook his head in pain and said, "if only I knew. I used various means to study it. I didn't sleep for three days and nights. As a result... Don't say it. As long as you know, this thing can't be made by people. In addition, maybe god can tell you.".

"You don't know a scientist. How can I know that the old man looks abnormal, so he'd better get out of here," he grabbed the stone mill on the table and put it into his backpack. "What about my other things?"

"Er!" Zhang Yechang seemed to suddenly think of something, excitedly grabbed Lu Ziming's arm and said, "young man, you have great talent for scientific research. The data in your notepad is very important for us to study mutant organisms. As long as you are willing to stay, I promise no one will catch you. I can promise you whatever you want.".

"Is this man crazy and wants me to stay? He doesn't want to stay in Harbin for a minute." he deliberately looked around as if he was thinking.

"Things used to be misunderstandings. Hacheng needs people like you. I'll......" Zhang Yechang said excitedly. Suddenly, his body softened and fell to the ground.

"Sorry, I won't stay here!" Lu Ziming said, standing behind Zhang Yechang.