"You mean," she said, "because Teacher Chi is a native of the underground city, and the meteorites here were once things from the underground city. So as Teacher Chi's descendants, we have half of the blood of the underground city, so we will not be affected by the radioactive radiation toxins in the meteorites and can wear them for a long time?"

"good!"

Gu Siyin nodded heavily.

He added: "However, after three years of day and night research in Laboratory 49, special reagents have been produced that allow ordinary people to wear it for a longer period of time. Some people with strong physical fitness and special blood types can also adapt to the meteorite pendant after special training and wear it for a longer period of time."

"However, none of them can be worn for a long time without any side effects like our Gu family members."

"But I heard that the laboratory is stepping up its research and recruiting new talents. Perhaps one day in the future, there will be a major breakthrough, and then even ordinary people will be able to wear it safely for a long time."

After hearing this, Lin Wu frowned slightly and asked, "Why is No. 49 so concerned about this meteorite like the Huo family... Do they also want to enter the underground city and obtain the treasures in the underground city like the Huo family?"

Gu Siyin hesitated when she heard this, and her expression was extremely struggling.

Seeing this, Lin Wu lowered his eyes, loosened his hand and took a step back, saying casually: "I know, this is No. 49's top secret, it is inconvenient to disclose it to outsiders. If you don't want to say it, you don't have to, I won't force you."

Gu Siyin: “!!!”

Gu Siyin hurriedly said, "No, no, no, Wuwu, that's not what I meant, and I don't think you're an outsider!"

Lin Wu looked up at her, his dark eyes clear and bright.

Gu Siyin felt as if she had been shot in the heart. She was so soft-hearted that she immediately grasped Lin Wu's hand and said, "Well! Those two old bastards want to win you over. They will probably tell you in the future to trick you into entering No. 49. Instead of that, I'm telling you, you must not be fooled by them!"

Lin Wu said, "Okay, I'll remember that."

Gu Siyin: “!!”

My sister is so well-behaved, obedient and cute!

No wonder the eldest and second brothers wanted to find their sister so much, and their parents couldn't forget their sister! Gu Siyin was so happy to be seen that she spoke softly, but when she spoke, she was still serious: "Wuwu, have you heard of the Nantianmen Project?"

Lin Wu was stunned and shook his head slowly.

Gu Siyin gave a brief introduction: "The so-called Nantianmen Project is committed to building a strategic strike cluster of aerospace carriers covering all areas of the world. This was caused by a surface geology crisis and an invasion of high-dimensional life forms by unidentified flying vehicles in the last century. At that time, the authorities quickly suppressed the problem and did not let the public know to avoid panic. But in fact, since then, the authorities have suspected that there are really unidentified life forms in our place."

"It dates back to the end of the last century. At that time, in a place called West Virginia in the United States, an observatory received some strange signals, which were suspected to be warnings of invasion by other life forms. This attracted the attention of many parties, but no one could find out the truth, so they announced that it was actually a satellite sending a signal by mistake to suppress public opinion."

"During this period, many strange things happened one after another. I won't tell you about them for now. In short, our superiors paid great attention to it and secretly formulated a long-term development plan named after Nantianmen, in case we really face crises in the future that ordinary people like us can't bear and are powerless."

Lin Wu really didn't expect this.

Her astonishment was beyond words, and Gu Siyin was not surprised. She had seen many people who had heard these things in the past and were more shocked and out of control than Lin Wu at this moment.

"At that time, my father had actually been secretly handling many things as a participant in the Nan Tianmen Project, and the assistants around him were also sent by the higher-ups. My mother was seriously ill, so my father turned down all his duties and stayed at home with her. This attracted the attention of the higher-ups, who asked the assistants to come and see what was going on with my father. That's when he accidentally heard my mother mention the existence of the underground city."

"After I reported it back, the higher-ups attached great importance to it. They believed that the underground city was very likely to be a major breakthrough in their exploration. If we can obtain the secret of the underground city, our civilization will rise by more than a few degrees and move closer to a high-dimensional civilization. In the future, we will be more at ease when facing invasions from unknown life forms."

Lin Wu was stunned, and recalled what he had heard before, "So there was the '511' case. When Bo Qingcheng of the Bo family submitted the proposal, was it approved immediately?"

Gu Siyin nodded solemnly, "You may not have thought that the higher-ups had the intention of taking my mother away and trying to find out the underground city from her! But my mother's mental state at the time, how could she withstand it? So after discussing with my father and my uncle, they decided that my uncle would go to find the underground city himself and make the higher-ups give up the idea of ​​taking my mother away."

"After the higher-ups agreed, my uncle went to see my uncle from the Bo family. They submitted a proposal and contacted a dozen well-known talents at the time to form a team with guaranteed capabilities to go overseas. After those people knew the significance of the '511' operation, they agreed without hesitation."

Young people are full of passion and regardless of danger, they are only rushing towards the possibilities of the future.

Gu Siyin sighed and smiled helplessly, her voice tinged with bitterness: "You know the result, failure. But the higher-ups didn't give up and still wanted to find my mother. In order to save my mother, my father made a deal with them and gave my second brother to them."

"At first, my second brother didn't know. But one day he overheard a conversation between my father and grandfather in the study, and then he took the initiative to stand up and volunteer. After that, my second brother was very busy. On the one hand, he skipped grades to study, and on the other hand, he received special training. He didn't study his favorite major in college. As soon as he graduated with a master's degree, he joined No. 49 and was always in danger."

"But my second brother didn't tell us this. Only he and my father knew about it. I only found out everything after I was tricked into No. 49."

Lin Wu's brows suddenly furrowed.

She looked at Gu Siyin: "You don't want to stay in No. 49? I can help you get out."

Gu Siyin shook her head and said gently, "Maybe at the beginning, my sister and second brother were resentful, but later, they were no longer. We are members of No. 49 and the country. It is worth it for us to take these risks. And there must always be someone who takes the first step to take risks and explore the way, so that the later generations can walk more smoothly, right? We just happen to be the predecessors."

They are willing to do so for the sake of the overall situation and the collective and long-term interests.

Lin Wu listened with a look of confusion in his eyes.

As a child, she learned to be for herself.

Later, she learned to care for the people around her.

But this is the limit of what she can do, because she is not kind enough to consider so many people at the expense of her own interests.

This is a pretty stupid move.

If you are not careful, you may be crushed to pieces and lose everything.

But why would people like Gu Siyin and Gu Shiqing, as well as those who went overseas back then, be willing to do so? And just because of a vague, unconfirmed underground city?