When Sun Aimin heard the sound of someone coming upstairs, he pretended to go downstairs and ran into a girl of about fifteen or sixteen.

He moved aside to let the girl go upstairs first. After thanking him, the girl stopped on the second floor and took out her key to open the door.

In an instant, the noise of the children in the house multiplied.

The girl saw the mess in the house and the traces of tears on the boy's face. She instantly became furious and yelled, "Little brother, are you bullying your big brother again?"

The little boy was not intimidated by his sister's outburst. He stiffened his neck and said, "Sister, please don't accuse me. I'm so young, how could I bully him? You just scold me. When my parents come back, I'll complain and say that you two beat me together!"

The girl was so angry at the boy's words that she grabbed him, raised her hand and hit him on the butt, saying, "I told you to complain, and you still dare to complain? You are so young and you just lie!"

The bewildered teenager standing by hurried over to break up the fight and said to the girl, "Sister, stop fighting. Mom and Dad will be back soon." Xiaofei wanted to go out to play, but Mom told him not to take him out, so he got angry.

I don't have a key either, and I'm afraid I won't be able to get back into the house if I go out, so I don't dare to go out. Sister, why don't we take him downstairs to play for a while?"

The girl stopped what she was doing, let go of the little boy, and after thinking for two seconds, she replied, "Xiaochuan, you haven't eaten at McDonald's yet, right? It's delicious, and there's one near our house. Come on, I'll take you guys out for something delicious. Our parents said they won't be back until midnight, so we'll have to take care of dinner on our own."

As she spoke, the girl began to dress the little boy. The children tidied themselves up briefly and locked the door. Sun Aimin quickly walked down the stairs from the corner on the first floor and out of the unit door.

A minute later, several children emerged from the hallway. Sun Aimin observed that the girl was probably a middle school student; she was still wearing her school uniform. The boy looked about twelve or thirteen, and the youngest child was about three or four.

Judging from their ages and the names "Xiaochuan" and "Xiaofei" mentioned in their conversation just now, the information about the three children of the Qian family corresponds to what Yuan Jie described.

But there are only three children here, where is his own son? Could he have met with an accident now?

Sun Aimin was worried and shook his head vigorously, muttering to himself: No, no, that child must be living well somewhere.

Watching the three children walk away, Sun Aimin thought back to the conversation they had just had. The girl had said her parents wouldn't be home until midnight. Could it be related to the contents of the black suitcase?

It seems that he has to go back now, maybe he can solve the mystery in his heart at night.

Sun Aimin glanced at his watch. It was already six in the evening. He hurried out of the residential gate and, following his memory, headed towards the train station, scanning the road for rickshaws. Nearing the end of the road, he finally caught a tricycle.

After all this trouble, another hour passed.

He had the tricycle stop directly at the entrance of the alley leading to the back door of the noodle shop, and walked about a hundred meters inside. He looked around and found that there was almost no place to hide except for the public toilet diagonally opposite.

After some mental preparation, Sun Aimin put on all the masks in his bag before slipping into the men's restroom.

In this era, residents do not have much of a nightlife. Around eight o'clock, everyone is basically at home, watching TV or playing mahjong, but there are not many people hanging out late at night, so this street is very quiet so far.

If there was any noise coming from the back door of the noodle shop, it should be heard in the public toilet.

In fact, he is still not sure whether this noodle shop has any connection with Zhan Jinhua and his wife. He is just relying on his intuition and taking a chance.

Even though he was wearing several layers of masks, he still couldn't resist the toxic gas released by the old shit. After staying in the public toilet for two hours, Sun Aimin felt that he was suffocating and his brain was lacking oxygen. But there was still silence outside, and he couldn't help but think that his behavior was a bit funny. If he went back and told Yuan Jie about this embarrassing experience, she would probably call him a "big fool" again.

Just when he suspected his premonition was wrong and was about to give up, he suddenly heard a faint voice: "You go in and get the goods first, I'm going to the bathroom!"

When Sun Aimin heard that the other party wanted to go to the toilet, his heart was in his throat: What should I do if someone comes in?

Then I laughed at the thought that came to my mind. It seems that people really can't do things secretly and do things that are not in good conscience. Although I haven't done anything wrong now, I still feel like I am "seeing enemies everywhere"!

In a public toilet, why would someone who goes to the toilet normally worry about being seen by others?

Just when he heard footsteps approaching, they suddenly stopped not far away, and then he heard the familiar sound of water being released.

Sun Aimin couldn't help but breathe a sigh of relief and patted his chest: It was really a false alarm!

At this moment, he began to pay more attention to the movements outside. Soon, he heard the sound of the iron door opening and a sound similar to that of a suitcase being pulled.

The man who had said he was going in to get the goods started talking again, deliberately lowering his voice and shouting to the person who was relieving himself, "Are you done? Hurry up, let's go!"

The person who was going to the toilet responded and quickly left through the bushes beside the public toilet.

At this time, Sun Aimin quietly stuck his head out from the wall of the public toilet to check the situation outside. He found that in addition to the two men talking, there was also a shorter middle-aged woman. At this time, she was working with the two men to load three suitcases into a van parked at the door.

Afterwards, the two men got in the car, started it, and quickly drove away. The woman then entered the store through the back door and locked it.

Watching the van drive away, Sun Aimin felt anxious. He could only make out the outline of the car and the license plate number in the dim light of the street lamp. He couldn't catch up with it on foot, so how could he find it?

After a whole day of hard work, it was almost eleven o'clock in the evening. Without any other gains, we could only find a place to stay nearby.

He walked across two streets and checked into a hotel a little further away from the train station.

After washing up and lying on the bed, he began to sort out the various information he had recently received in his head, including Yuan Jie's retelling and his own personal experiences. He needed to plan tomorrow's tasks carefully and not blindly try his luck like he did today.