"I... arrived the day before yesterday."

The man took out a train ticket from his pocket. Yan Ruyu took it and saw that he had indeed arrived in Beijing City the afternoon of the previous day.

"Then what have you done these two days?"

"I'll find them two. The woman answered my phone call, but she refused to see me, and said why she wanted her to consider it.

Damn, I only have a few dozen dollars on my body, and I can’t live enough. I slept on the park bench for two nights, and she even threw a tantrum on me..."

"Then how did you find this place?"

"I vaguely remember that her sister's house opened a store nearby, selling mutton noodle soup. I asked all the way. I happened to get here this morning and saw a lot of people around me. I just wanted to join in the fun. Who would have thought..." The man lowered his head and wiped his eyes, "Why didn't my baby?"

He had no logic in his words, and he was a hammer and a stick. Fortunately, Yan Ruyu had a clear understanding of his experience and thoughts, so he was not led by him.

Yan Ruyu continued to ask: "Which park did you spend the night in these two days? Can anyone see you prove it for you?"

"There is a homeless man. I've talked to him. I don't know if he's still there."

Xiaobai volunteered: "I'll take him to implement his whereabouts first!"

"Finish!" Yan Ruyu nodded and said to Minghui again: "Start the outside world, focus on people who have conflicts with the boss's wife's family, pay attention to debt transactions, and nearby restaurants, I think her store is doing well."

"I understand! Isn't there that sentence? Only peers can have naked hatred. Don't worry! I will pay attention!"

After solving these problems, Yan Ruyu returned to the kitchen again, but saw Wu Cuo poking his head out of the skylight, not knowing what he was looking at.

"Have you discovered it?" Yan Ruyu asked.

"You really don't know, footprints! Fresh footprints!"

When Yan Ruyu heard this, he became energetic and asked quickly: "What kind of footprints are there?"

"Men, the shoe size should be 40. Judging from the sole pattern, he is wearing a pair of severely worn leather shoes."

Yan Ruyu shook her head, "It's not the child's father. I just saw it. He was wearing cloth shoes, and the shoe size was at least No. 42."

"It seems that the person who left the shoe prints should be an outsider, not the chefs and waiters who live in the backyard. Because if they enter the back kitchen, they can go directly to the back door without having to climb over the skylight."

"That's right." Wu Cuo simply climbed up to the roof from the skylight and walked forward along the footprints on the roof.

This is a row of storefront rooms with only one floor. The doors and faces are decorated in an antique style. The roof is connected and it is 50 meters long.

The footprints extend to the end of the roof, and traces of climbing were found on the side walls of the house.

Yan Ruyu also climbed onto the roof and followed Wu Cuo's pace.

Looking at the side walls where the climbing marks were left, Wu Cuo said: "It seems that someone has climbed up from here."

"But why are there only one row of footprints when you go?" Yan Ruyu asked, "Someone climbed up from here, walked to the skylight, climbed down the skylight, entered the mutton noodle soup shop, but did not return along the way. How did the murderer get out?"

Wu Cuo frowned and thought for a while, saying, "But... there are no traces of climbing in the skylight. Could it be... This person on the roof has nothing to do with this case... it's just that someone climbed the roof in boredom..."

"Impossible! You can also see the footprints along the way. You didn't hesitate to wander in the middle. This person's goal is very clear, that is, the skylight of the Chenji Mutton Noodle Soup Shop.

Furthermore, you always leave footprints on the return journey when you go to the room, but when the footprint comes to the skylight of the Chenji Mutton Noodle Soup Shop, you will end suddenly, and you must have entered the skylight."

Yan Ruyu returned to the kitchen on the same road, while Wu Cuo stayed on the roof to take photos and collect evidence.

As soon as he returned to the kitchen, Yan Ruyu looked at the plates and jars on the table table of the stove carefully. After reading it, he pointed to several of the large enamel jars and asked Master Wu: "Are these oily things usually placed here?"

"Yes, the clean oil and chili oil have been put here all the time. And..." Master Wu hesitated for a moment and pointed to the bottom of the desk. "There is also the inside, which is also full of oil. Usually fried oil cakes... are the oil."

Yan Ru went to see the white plastic vat under the table.

I didn't see the contents in the bucket, but I asked about a bad smell first.

Yan Ruyu pulled the white bucket out a little, and the smell became stronger. It seemed that something was sour again after frying it, and a burnt sour smell.

"This is... Damn it! Gutter oil!" Yan Ruyu cursed and sweared.

He was used to the smell of rotten corpse, but at this moment he was very nauseous and needed to resist the feeling of retching.

"You!" He pointed at the master's nose and wanted to scold him, but he held it back, and finally just sighed.

Yan Ruyu found that after removing the white bucket, a circle of red and yellow mimeograms appeared on the ground that was originally pressed by the white bucket. When he touched it, the oil had not dried up and became sticky.

He looked up and down at the white oil barrel. The oil barrel was cylindrical, about one meter high and a radius of seventy or eighty centimeters.

A circular opening with a radius of about thirty centimeters was opened on the top, without a lid.

There are many dry oil ideas around the barrel around the round mouth, which seem to be dripping when scooping outwards.

There were also large traces of oil spilled on one side.

Yan Ruyu looked at the trace carefully, then touched it again, and found that the sprinkled oil had not yet solidified.

"Have the oil in it been sprayed recently?" Yan Ruyu asked.

"I remember... no!" The chef shouted outside at the top of his throat: "Little bastards! Who of you sprinkled oil?"

"No!"

"Neither I!"

"Yes, yes, weren't you watching from the side when we were working?"

...

When Wu Cuo climbed down from the skylight, Yan Ruyu was staring at the mimeograph and silently, not knowing what he was thinking.

"Have you noticed it?" Wu Cuo asked.

"I've found a big discovery, but unfortunately I'm not very helpful in solving the case at the moment." Yan Ruyu thought for a while and said, "I need a list of employees in the store."

He said to all the employees waiting in the store: "Please go back to the dormitory. We need to ask you some questions separately. Don't be nervous, just answer them normally."

Wu Cuo also said to the boss: "The kitchen needs to be blocked as a crime scene. I'm afraid it will not be open these days."

The boss was quite easy to talk and nodded, "As long as I can solve the case quickly, I will cooperate with you."

Everyone was noisy for a while and returned to the dormitory in a mess. Yan Ruyu and Wu Cuo used the restaurant front hall as an inquiry place, and the boss was the first to accept the inquiry.

"How much do you know about the parents of your children?"
Chapter completed!