I fell through the tunnel and brought my family to live a good life

Gao Jian frowned slightly when he heard this, and he seemed not surprised by this question. "Mr. Tang, there is a reason why only Sun Yingying is wanted in this case. In fact, even the people of the Du family don't know what this new housekeeper looks like."

Gao Jian's words shocked Tang Wenhao, and he realized that there might be a more complicated truth behind this. He stared at Gao Jian, trying to find more clues from his eyes.

"I wonder what he looks like?" Tang Wenhao repeated, frowning, "What does this mean? Could it be that this new housekeeper has been acting anonymously in the Du Mansion?"

Gao Jian nodded and explained, "That's true. The Du family has two housekeepers. One is older and mainly manages the chores of the mansion. The new housekeeper has not been in the Du mansion for long, but he is extremely low-key and never shows up easily, let alone interacting with the servants of the Du mansion. Mr. Du trusts him very much and leaves many important matters to him. So even after the incident, we searched the Du mansion, but no one could accurately describe his appearance. We tried to get information about the new housekeeper from various channels, but to no avail. He doesn't seem to have any past records, as if he appeared out of thin air."

"Since the housekeeper's actions are secret, how can we determine that the housekeeper and Sun Yingying are having an affair?"

Gao Jian's frown deepened, and his voice was a little tangled. "Mr. Tang, this is actually the confusing part of this case. But we say that the two of them were in collusion, and it is not groundless speculation. First of all, the two of them disappeared at the same time, which is an unusual signal in itself. The new housekeeper usually only works for Mr. Du and rarely sets foot in the backyard. It seems that he has no intersection with Sun Yingying, but on the day of the incident, he took the initiative to ask the groom to personally send Aunt Sun home. After that, the two never came back."

"The second is the confession of the maid," Gao Jian continued, "The maid Xiu Ju in this case file was originally Sun Yingying's personal maid. She also disappeared after the incident, but we found her later. As a personal maid, Xiu Ju should have known about her master's whereabouts and private affairs. After she was brought to justice, she confessed that the housekeeper often came to see Sun Yingying late at night, and the two did not avoid Xiu Ju. Afterwards, the housekeeper gave Xiu Ju a sum of money to let her leave the house. After our investigation, Xiu Ju did not know about Master Du's death."

"Finally, and most importantly," Gao Jian said, his eyes becoming unusually determined, "we found a letter in the housekeeper's residence. After comparing the handwriting on the letter, we confirmed that it was written by the new housekeeper. The letter expressed hatred for Master Du, which has become the most direct and powerful evidence we have so far."

"Brother Gao, where is this letter?" Tang Wenhao recalled that he did not see the letter in the file just now.

"Mr. Tang, the letter is currently being kept in a box as a key piece of evidence," Gao Jian explained. "Considering its importance, I have not recorded its contents in the file to prevent it from being leaked. Not only does the handwriting of the letter match that of the new housekeeper, but the emotions and hatred for Mr. Du revealed between the lines make people suspect that it is directly related to the case. The letter mentions some of Mr. Du's unknown secrets, as well as the real purpose of the new housekeeper joining the Du Mansion, which seems to be related to a grudge many years ago. These contents, if not personally experienced or known by someone, would be difficult to fabricate in such detail and full of hatred."

"Brother Gao, can I take a look?"

"Of course you can. Mr. Tang, please wait a moment."

Gao Jian turned around and went to look at the end of the bookshelf. After a while, he came back holding a box.

Tang Wenhao took out the letter from the box and read it carefully. It was indeed as Gao Jian said, the butler hated Master Du deeply.

Gao Jian also expressed his thoughts. "From the existing clues, Sun Yingying may have been used by the new housekeeper as a pawn in his revenge plan. After all, the strength and planning behind a person who can quietly infiltrate the Du Mansion and even gain the trust of Mr. Du should not be underestimated."

The image of the strange man he met three years ago slowly emerged in Tang Wenhao's mind.

"Brother Gao, even if you don't know what the housekeeper looks like, do you know his physical features? To be honest, this Sun Yingying used the alias Chen Yuanyuan three years ago. I fell in love with her and had a deep relationship with her, but later I saw her talking to a man who claimed to be her cousin. After that, I never saw her again." Tang Wenhao omitted the incident of Chen Yuanyuan faking her death by falling into the water.

Gao Jian's eyes moved slightly when he heard this. "This 'cousin' mentioned by Mr. Tang is worth investigating. According to the people in the Du family, the housekeeper is estimated to be in his early twenties, thin and tall, but such physical characteristics are not uncommon in the crowd, so it is difficult to use them as clues for tracking."

The strange man in Tang Wenhao's memory did fit the description, but as Gao Jian said, there were many people with this kind of physique.