Because he was so excited after knowing Lin Wu's existence, Gu Tangzhang had no time to pay attention to other things, and had no time to ask Gu Chengbo and Gu Shiqing what specifically happened between them and Lin Wu in the past month.

Lin Wu himself was not particularly surprised by Gu Tangzhang's question.

The background of Chi Yangzhi they were going to talk about was closely related to the Huo family and the underground city. Perhaps the hidden secrets were so serious that they might drag people into a deep whirlpool. It was reasonable for Gu Tangzhang to find out what she was talking about before deciding whether to tell her or not.

She sorted out all the information she had learned so far in her mind and said slowly, "It's a lot. I think I know almost everything about them at the moment."

"The first case that attracted attention was the '511' case, so let's start with that case."

She said calmly, "Among the young people of the five clans in Beijing, it was Gu Tangzhang of the Gu family, who is also my uncle in name, who first knew about the existence of the underground city. He then approached Bo Qingcheng of the Bo family and persuaded him to support it. The two of them submitted a proposal together, and the higher-ups agreed to select a number of young and prominent talents from the other five groups and the five elements of the black market to form a team and travel overseas to find this so-called underground city."

"However, the process was full of dangers. None of the team came back alive. Even though many people were sent to search, nothing was found. Later, the higher-ups closed the case, and only a few people, such as the Gu and Bo families, are still secretly searching for the people involved."

"Am I right about the whole story of the '511' case?"

Gu Tangzhang looked at Lin Wu with a strange look in his eyes and nodded.

Lin Wu continued, "But this is only known to those who experienced it back then. There are many things that they don't know, such as the fact that the existence of the underground city was first leaked from the Gu family."

"Eighteen years ago, Teacher Chi went to North City for unknown reasons. She was assassinated and had a difficult childbirth. After she survived, she talked about the underground city, and you started looking for it. This led to the subsequent '511' case. I guess you didn't tell anyone from the Five Clans and Five Elements about this at that time."

Gu Tangzhang paused and nodded: "Not bad."

Lin Wu added: "Those people don't know that the two teams that went overseas back then were not completely wiped out. At least one man and one woman survived and met the Huo family. They all had unexpected experiences."

"One of the female team members drifted to the vicinity of the underground city. After escaping for several years, she returned to China. She wanted to report what happened that year, but was unexpectedly targeted by two groups of people. She had no choice but to tell a drug lord named Shi Ying about the underground city, who was also targeted by the Huo family. In the end, she died."

"But she left behind two important items. One of them is the Buddha head at Pier 9 that you all know. It is the item in the underground city, and it contains a secret. After the female team member died, it fell into the hands of the Huo family. Then, someone took it away during an accident at the Huo family, and it ended up in your hands. But now it has returned to the Huo family."

Gu Tangzhang showed a trace of surprise on his face.

This was indeed the first time he heard about these things about the female team members and the Buddha head.

"What's the other thing she brought?" he asked.

"The way to enter the dungeon is to get a tattoo. She knows how to make this tattoo and how to verify the authenticity of the tattoo." Lin Wu said.

After he finished speaking, Gu Tangzhang's eyes lit up with a gleam of brilliance.

Lin Wu pretended not to notice and said, "And the other male team member who survived was also captured by the Huo family and was imprisoned under the Ninth Pier as a subject for tattoo experiments. That's right, the Huo family has used the Ninth Pier as a cover and has been conducting tattoo experiments under your noses for two years."

"Oh, the people they use for their experiments are all recruited from all over the place. For example, they secretly communicated with the major clans in North City and wanted to use their people legitimately. But they never succeeded."

Gu Tangzhang’s face suddenly turned as black as the bottom of a pot.

This was simply a provocation to his Gu family! They had been secretly rivals with the Huo family for so long, and in the end, not only were they tricked, but they also protected the Situ family for so long and covered up the Huo family's tattoo experiments, so that no one discovered what the Huo family had done! Gu Tangzhang asked, "Is this male team member still alive?"

Gu Tangzhang let out a long sigh.

Lin Wu said calmly: "To some extent, these two team members have achieved what they wanted. What happened back then will no longer be buried, and the facts of the "511" case have been clarified. Now we not only know where the underground city is, but also how to get in - tattoo."

"Logically, the events of that year should have ended here. After all, these are the only things that are openly related to the team members' overseas trip. However, there are still many secrets that have nothing to do with those team members but are closely related to the dungeon."

"——For example, Mr. Chi's life experience."

Gu Tangzhang couldn't help but remain silent.

Lin Wu looked at him, "I have told you everything I know. Now, can Mr. Gu tell me? I thought about asking Teacher Chi about her life experience, but Gu Chengbai said that eighteen years ago, the teacher was traumatized by my incident... and her mental state is not very stable, so it is not suitable for questioning. So I can only ask Mr. Gu."

In fact, there is much more that Lin Wu did not tell Gu Tangzhang, that is, what she discovered from the underground tomb.

For example, some people from the team that went overseas that year still survived, but on their way back home they discovered a spy in the team. During the investigation, they also discovered some secrets related to the palace golem in the Damaya Mine, and finally decided to give up returning home to investigate.

Lin Wu didn't know what prompted them to make such a decision.

But she was sure that since this reason could make those people prefer to become dead in the eyes of their loved ones, with no possibility of reunion, and to continue living in a foreign country, then its importance and truth were definitely not something she could delve into at the moment.

Furthermore, Lin Wu still had some unspeakable doubts about the Gu family and Chi Yangzhi, which made her instinctively not tell Gu Tangzhang what she learned from Cheng Man in the underground tomb.

Perhaps after she figures out the connection between Chi Yangzhi and the underground city, and decides whether she can completely trust Gu Tangzhang, she will consider whether to tell him everything.

Gu Tangzhang looked at Lin Wu with complicated eyes, which showed both relief and pride, but more of helplessness and struggle.

After a long while, he sighed and said, "Wuwu, to be honest, Dad is very grateful to you."

Lin Wu: “?”

"In the past eighteen years, you have taken good care of yourself and grown up very well, far beyond Dad's expectations."

Gu Tangzhang stretched out his hand, as if he wanted to pat Lin Wu's shoulder, but after looking at the seemingly far distance between him and Lin Wu, and Lin Wu's subconscious move to step back, he withdrew his hand.

He said, "Dad has never thought of telling anyone about your mother. Including your two brothers and sister. Because those things should be solved by us elders, and innocent young people like you should not be involved."

Lin Wu looked at him without saying anything, waiting for him to continue.

Gu Tangzhang said, "Now, Dad believes that you are capable of facing it, and is willing to tell you. But Dad is only telling you to respect your wishes, and does not want you to get involved in it. So you promise Dad that you will listen to it, and when you leave the study, just pretend that you don't know and don't care about it, okay?"

Lin Wu was slightly startled, and said, "Please speak, Mr. Gu."

Gu Tangzhang asked first: "Do you know about the funeral industry among the five elements of the black market?"