Mr. Tian answered the phone at a fast pace, and as soon as he came up, he asked me if I had found anything in the house.

I didn't hide it from him, and directly told Mr. Tian all the strange noises we heard when we entered the building and the pungent smell, and then I asked him where the toilet on the second floor was connected.

Mr. Tian's answer surprised me, he said that the small western-style building has a total of two bathrooms and two toilets, and the sewer pipes of these two toilets are connected to the unified underground large manure biogas tank in the village.

Although I don't know much about the structure of the digester, I know that the biogas relies on anaerobic bacteria to ferment to produce methane gas, so the digester must be sealed, which means that the place connected to the toilet is also stagnant, which is inconsistent with my previous judgment.

I immediately asked Mr. Shimoda if he had ever thought that the smell in his house was related to the biogas digester.

Mr. Tian replied that the first time he smelled the stench, he had asked someone to inspect the biogas digester in the village, but there was no problem with the digester at all, and the sealing effect was good. A large number of liberating bacteria are used in the tank to discharge the odor very cleanly, and the septic tank also has a special water filtration device to solve the problem of ammonia emissions, so the odor is not related to the biogas tank at all.

After answering all my questions, Mr. Tian also turned the topic back to the question of buying a house, and asked if I was still interested in buying that house.

I really have to think about this, and in the current situation, Qiao Wei doesn't seem to be 100% sure that he can handle everything.

I told Mr. Tian that I needed to visit his house again in the evening and give him an answer tomorrow. Mr. Tian didn't rush me, just reminded me to be more careful, and then hung up the phone.

It was almost noon when Zhang Xixian returned to Heitong Village, and brought back four gas masks, and it seemed that he was going to act with us in the evening. Then we found a fish restaurant for a good meal, and in the afternoon, Qiao Wei rented a tour boat to go around the river, saying that he wanted to see if there was any demonic spirit in the river.

I can't swim, I also reject boats, and the most important thing is that I can't accept Qiao Wei's "demonic spirit", so in the afternoon, when he took Tang Hui and Zhang Xixian to the river, I went back to the resort with Old Man Xu, and talked about Sun Erxiao and the four people who died more than 30 years ago in the tea hall.

Old man Xu is almost eighty years old, and when people reach this age, it is easy to forget the recent events, and they remember the past events very clearly, and almost the whole afternoon Old Man Xu was recalling the events of his youth.

According to Old Man Xu, Heitong Village had a good life in the past five or six years. At that time, the gap between the rich and the poor was not large, in the words of Old Man Xu, the poor ate good things once a year, and the rich ate good things once a month, and Heitong Village guarded the Jiangkou to eat and drink without worry, so in the early years, there were very many people in Heitong Village, which was almost the same as now.

Later, the XPCC went to the Great Northern Wilderness to build a farm, and gradually the standard of living was flattened, and after the reform and opening up, Heitong Village began to be lonely, and people gradually left the village to develop in the town. It wasn't until the last few years that Heitong Village began to engage in tourism, and the village slowly regained its popularity.

Old man Xu also deliberately emphasized that the "popularity" he said did not mean popular, but the meaning expressed by the word itself. Because more than ten years ago, the whole village was lifeless, except for a few large fish farmers in the village who were willing to stay in the village, everyone else could go, and for a while, there were even no young people in the village.

After talking about the development trajectory of the village, Old Man Xu finally mentioned the four people who drowned mysteriously in the past few years from 80 to 86. He said that those four people had a good relationship with Sun Erxiao. In the past, when Sun Erxiao came back from fishing, he liked to call a number of people to his house to push pai gow together. At that time, winning or losing was just a few cigarettes and a few fish, and no money was touched at all, and everyone was just entertaining, so they couldn't hurt their feelings.

Seven years after Sun Erxiao's death, the village began to decline, and the people in the village began to go out, and the murder began when people left the village.

In fact, I am still skeptical about the claim that Blackfish retaliated and killed people, because the gap of seven years in the middle made me a little incomprehensible, and I also expressed my doubt.

Old man Xu has a different opinion than mine. He felt that the black fish monster must exist, but Weishenme would have to take revenge after all these years, but he couldn't say why.

Immediately afterwards, Old Man Xu turned the topic to the drowning case in Jiwang Village. Old man Xu said that after the accident in Jiwang Village, he also specially asked his son to inquire, and his son came back and told him that the matter of Jiwang must be different from Heitong Village, because he had not heard of the smell of drowning people there.

However, there is one point that the old man specially emphasized, that is, the two people who died in Jiwang Village were two young people, and these two people were also the sons of those who left Heitong Village before.

Old man Xu said that he had finally given a valuable clue for a long time, and I immediately called Lei Qishan about it. Lei Qishan said that he would immediately ask people to confirm whether the three people killed in Lianjiangkou Town were related to Heitong Village, and that he would notify me immediately if there were any results.

At about five o'clock in the evening, Qiao Wei also came back from Jiangshang, he shrugged his shoulders and spread his hands to say that he had been busy all afternoon, but Tang Hui and Zhang Xi, who went to Jiangshang with him, were happy now, and seemed to be having a good time.

After a brief dinner, we took a brief rest in the lodge and then began to prepare coarse salt, sandalwood swords, and a plastic bottle of chicken blood. After it was completely dark, the four of us went to the old residence of the second son of the Sun family again.

At night, the village is brightly lit, and the entire resort is hung with a long series of large lanterns, plus the light of the moon, even when you get to the entrance of the village.

The key to the house had been in my pocket when I left in the morning, and this time I went straight to open the door and entered the house.

The room was much darker than the outside, so I immediately turned on the flashlight on my phone.

The house was in the same condition as it was during the day, with no smell or sound. I shouted "Is there anyone" a few times as soon as I entered the house, but there was no response other than my own echo. Qiao Wei didn't wait for the strange sound to come out, he directly tossed out all the tools he had prepared, and began to use the Soul Summoning Decision after arranging the rune paper array.

In just a few seconds, the temperature in the house seemed to drop by more than ten degrees in an instant, and even a cold wind blew in the house. I knew something was going to come out soon, so I also took out the bronze knife in my right hand and held it tightly in the palm of my hand.

Suddenly, there was a bang from the second floor!

We checked the whole house, and the only thing on the second floor that made this noise was the broken door to the toilet.