When I entered the unit door just now, Gu Qingtong found a notice of the gas company's checklist posted by the wall. The date happened to be today.

She exchanged opinions with Shi Dong, and finally the two agreed: pretend to be a staff member of the natural gas company, and in the name of looking up the table, she found out what was the purpose of Director Li running here from afar.

The inner fabric of Shi Dong's coat was navy blue, which just fits the color of the uniform. He put on the coat backwards and gently knocked on the door of 401.

An old voice asked, "Who?"

"Hello," said Shi Dong, "I am a gas company meter checker."

The door mirror lit up, probably the light that the residents looked out when they looked out, “You wait, I’ll open the door for you.”

After a long rustling sound, the door finally opened. An old lady with meticulous hair was standing in the entrance with a crutch, looking up and down at Shi Dong.

"Grandma, is it convenient to enter?" Shi Dong asked politely, "If it is not convenient, you can report the reading of the gas meter to me!"

The old lady was slow to move, but her voice was loud: "Come in, the house is messy, be careful not to trip!"

Gu Qingtong was at the corner of the third floor. She heard Shi Dong enter 401. As the door closed hard, there was no other movement behind her. The anxiety gradually spread, and she suddenly felt a little worried about the safety of the temporary action...

"Grandma, I've disturbed you to rest. Please stay and I'll help you close the door!"

Fortunately, three minutes later, Gu Qingtong heard Shi Dong's voice again. The big rock fell to the ground in her heart, and she couldn't help but breathe a sigh of relief.

Shi Dong snapped his fingers as agreed, intending to tell Gu Qingtong that there is no target person in 401.

Immediately afterwards, he knocked on the door of 402.

Gu Qingtong's mind secretly counted out. About two minutes passed, and Shi Dong still couldn't wait until someone came to open the door. Gu Qingtong did not continue to wait. She quickly went up to the fourth floor and made a gesture of "rushing in".

Shi Dong nodded and said he received it, and then reached out to push the door.

The door was actually a false cover.

Shi Dong was shocked: "I obviously couldn't push it away, but why can I push it away again now?"

"Go in and take a look!"

Gu Qingtong and Shi Dong looked at each other, picked up the broom and mop rods placed there by someone in the corner of the wall, and entered the room one by one.

The one-bedroom house is empty, with no furniture and appliances, and no sign of life.

"What's going on?" Shi Dong even checked the kitchen and bathroom doors, but couldn't find a valuable clue. "The whole room was emptied? But 401 opposite doors were the old lady alone?"

Crack-

Gu Qingtong seemed to hear the sound of something shattering. Looking around, the window glass was intact, but her anxiety quietly aggravated.

She is familiar with this voice.

The first two times I heard it, the situation had an extraordinary turn. So, the third time I heard it today, it was like a strong intuition guiding her. Perhaps it was a success to solve the mystery of Principal Wu's disappearance!

"Sister Gu, come quickly!" Shi Dong shouted, "The windows of the house in Unit 5 next door are open, and there are brand new shoe prints on the windowsill!"

Gu Qingtong came when she heard the sound.

When her eyes turned to the windowsill of the next house, the backs of the two men and one woman suddenly appeared on the open space outside the door of Unit 5.

Both men wore hats, their heads and faces were blocked, and their identities were not recognized for the time being. But Gu Qingtong was very familiar with that woman's outfit - especially the silk scarf used by women to wrap their heads, and the printed pattern was a world-famous painting. When they met on the narrow road at the subway station, Wu Minhua wore such a silk scarf.

"Principal Wu?" Gu Qingtong took a cold breath.

"Such coincidence?" Shi Dong couldn't believe his ears. "Although the case of group leader J has been concluded, the reason for the fire in the warehouse of Huayu School is that who was attacked from behind, and the chemistry teacher you want to find out has no following yet..."

"It's not time to say this now." Gu Qingtong pointed to the man on the far left of the three, "Director Li - I remember his habitual movements. His walking center of gravity is on his right foot, and his whole body is slanted very clearly."

"No, Sister Gu, they want to run away!"

"Chase--"

Gu Qingtong and Shi Dong rushed downstairs and chased each in the east and west directions. As expected, until the two chased out of the community gate, Director Li and his companions seemed to have evaporated from the world, with no trace of it.

After meeting, Gu Qingtong looked solemn and her eyes were filled with sorrow.

"Little Stone, we've fallen into the trap!"

"Ah?" Shi Dong widened his eyes, "You mean, 402 is no one living there?"

"402 is just a trick to distract us from the attention. In fact, they set up a plan, and all three of them were hiding in the 401 at the time." Gu Qingtong recalled the direction of each unit of the building and analyzed, "The shoe prints on the windowsill were obviously made by man. They escaped from Unit 5, and the room next to Unit 5 could only be Unit 6 401, and Unit 7 next to Unit 402."

Shi Dong patted his forehead in annoyance: "Oh, Sister Gu, I understand! That old lady is not a real old lady, it was definitely what Director Li asked someone to pretend to!"

"We shouldn't have been following the car in Officer Liu and the others. We have been exposed..." Gu Qingtong also regretted it very much. "Although Director Li has not been in Linghai City for a long time, he has dealt with police officers in the jurisdiction after all, and knows the model and license plate of the police station."

Shi Dong lost his mind: "What should I do next?"

Thinking of Director Li's promise to summon workers to be investigated at 6 pm, Gu Qingtong's heart tensed again: "Don't move, wait for the fox to reveal his tail!"

-

It was dark early in Linghai City, and it was already night at 6 o'clock. The factory was brightly lit, and workers in the middle shift came out in a row, while workers in the evening shift showed tiredness and walked into the workshop dull swipe their cards.

Director Li was fine, so he found the remaining six workers in the morning to see Gu Qingtong.

After interrogating one after another, Gu Qingtong and Shi Dong did not get the answer they wanted. In the photo identification process, these six workers who claimed to be familiar with Shao Lan and Gao Yuquan did not recognize the key evidence without exception.

This evidence is a white jade bracelet excavated from the wrist of the corpse. Knowing who the bracelet belongs to is equivalent to clarifying the identity of the deceased.

"Is Hu Ying on the evening shift?" Gu Qingtong asked, "If there is plenty of time, we want to see her again."

"This..." Director Li picked up his phone in embarrassment and put it down, "Hu Ying is a skilled worker and a scarce talent on the assembly line. The workshop director will not agree to her breaking down."

Gu Qingtong's face was calm: "Then let's go to the workshop to have a face-to-face conversation with Hu Ying. The process is not complicated, but there is an important photo that needs to be identified by her."

"You have never signed a confidentiality agreement and cannot break into the workshop!" Director Li became panicked like a trapped beast in a cage. He said, "Forget it, Officer Gu, I think that I am an old acquaintance with you, I will sell you a favor once!"

In less than ten minutes, Hu Ying appeared at the door of the conference room. She caught a glimpse of Director Li standing with her hands behind her back in the corridor, and hesitated for a while before daring to enter.

"Police officer, I have written all I know to you, why did you ask me to come again?"

Gu Qingtong stepped forward and handed the photo of the evidence to Hu Ying: "Please help me identify who the owner of this bracelet is?"

"I think I've seen it somewhere." Hu Ying murmured, "In the past, there were four people in our dormitory, Shao Lan, Xu Lili, and Zhang Cuixia, who all liked to wear this kind of imitation jade jewelry. When they went shopping, they asked me to buy it together. I said I wanted to buy books, and they even laughed at me..."

"Improved jade products? Impossible."

Gu Qingtong asked Shi Dong to check the detailed description of the verification object number and present the text to Hu Ying for review.

The identification result shocked Hu Ying: "Authentic mutton fat jade? Are you teasing me? The three of them can't afford such expensive jewelry! Unless-" As he said that, Hu Ying glanced at the door again and added: "Unless it was another woman in our workshop at that time, she saved a lot of money and was willing to spend it on herself."

"Her name?"

"Gao Xiaojie, who has the same surname as Gao Yuquan, always likes to stick to Gao Yuquan and call her elder brother. Shao Lan has been jealous and made trouble, but it was left alone. By the way, her hometown is in Jinyang City, and she is a fellow villager with you!"

After a roundabout way, Gu Qingtong was 90% sure. She and Shi Dong divided the work and cooperated with him. Gao Xiaojie's household registration information was found from the staff files of the Personnel Department, and the investigation results were sent back to the Forensics Department of the Jinyang Criminal Police Team.

Before leaving Linghai City, Gu Qingtong was napping in the waiting room when suddenly receiving a call from a local landline.

Hu Ying heard from the receiver: "Police Officer, thank you, you are such a great person! The lawyer contacted me and she suggested that I take legal means to terminate the labor contract as soon as possible. She also said that she was willing to provide me with free legal aid."

Gu Qingtong smiled and said, "Lawyer Song is my old classmate, you can trust her."

"Thank you, police officer!" Hu Ying asked sincerely, "I didn't even ask you what your name is. Can you tell me? I will definitely repay you!"

"No need to thank you." Gu Qingtong looked up and happened to see a plane rushing into the sky. She said, "Take care, we will see you again if you are destined."

-

The flight landed on time, and Gu Qingtong and Shi Dong ran to the airport exit without stopping.

Li Zichen's phone call came in time: "Sister Gu, our car was temporarily parked outside the door No. 16, and you and Xiao Shitou will see it as soon as you come out!"

The driver was Cao Zhe and Li Zichen was sitting in the passenger seat.

They picked up the dusty Gu Qingtong and Shi Dong, and quickly started the car and rushed back.

Gu Qingtong couldn't wait to find out the result: "Has the deceased's identity information been confirmed? Is it Gao Xiaojie?"

"It's her." Li Zichen handed the tablet to Gu Qingtong, "The information is all in it. Gao Xiaojie is an orphan and has been living in a welfare home. When she became an adult, she still often keeps in touch with the dean and teacher. She lost contact eight years ago. The dean and the teachers thought that Gao Xiaojie couldn't think about it because of a broken heart, so she had specially found a factory where Gao Xiaojie worked. The factory only said that Gao Xiaojie resigned and left, and she didn't know anything else."

Shi Dong sighed: "If there are no immediate relatives, it is very difficult to identify DNA!"

"At the beginning, it made Zhong Hao and Zhao Hong and the others very worried." Cao Zhe said, "This Gao Xiaojie has not seen the medical records of the dentistry department, nor has she ever taken X-rays in the local hospital in Jinyang. The seemingly reliable identification basis was all soaked..."

"Da Cao, don't keep it a secret!" Shi Dong protested, "Tell the conclusion directly!"

Cao Zhe shrugged helplessly: "Okay, thanks to a teacher from the Welfare Institute, she has the best relationship with Gao Xiaojie and she also carefully preserves the braids she cut when Gao Xiaojie was ten years old. Forensic Department got the comparison sample."

-

Shao Lan's injuries were basically stable and she could undergo a formal interrogation in three days.

Reporting the gains of this trip to Chen Qizhang, Gu Qingtong walked out of the hospital gate. The noon sun stinged her eyes.

She subconsciously lowered her head slightly and walked to the shade of a tree not far away. When her phone rang at this time.

Unfamiliar number.

"Hey, hello?" she answered.

"Xiaotong, it's me."

Ji Heng?

Gu Qingtong adapted to the strong light around her and found that the landline area code on the mobile phone screen looked very familiar. The number Hu Ying called this morning was the same as this phone area code!

"Have you gone to Linghai City?" The mystery fog occupied her whole heart. "The people who helped Principal Wu escape yesterday afternoon were Director Li and the other was you, right?"

"Please don't investigate Principal Wu anymore!" Ji Heng's voice was hoarse, "When the truth is revealed, I will confess to you as soon as possible."

Gu Qingtong wanted to ask why, but only heard the beeping sound after the phone hangs up.
Chapter completed!