"Did you see anything unusual at the time of the crime? This window just looks over there. "


    "No," the man asked after a pause. "By the way, officer, have you found out the cause of the sudden fire?"


    "Still investigating."


    When he finally left Kinson''s house, Gao Cheng went to the intersection and couldn''t help looking back.


    This man is too suspicious, but he can''t explain anything until it''s clear. All the people around here are suspects, so it''s impossible to prove anyone without making clear the cause of the fire.


    After standing for a while, Gao Cheng gathered his thoughts and went to the next family.


    ……


    The next day, when Gao Cheng asked the little girl who saw the red line, a police car stopped on the street and neihai walked out of the car with a straight face.


    "You let me find out the information I investigated. The volunteer named Jin Senlong, male, 42 years old, works in a nearby metal processing factory..."


    Neihai shoved a stack of documents to Gao Cheng and said angrily, "you are pretending to be a policeman and asking others for questions. Do you know it''s illegal?"


    "I didn''t say that I was a policeman, I just said that I would help the inland police officers to investigate."


    "You! I''m going to be hurt by you... "


    "It''s not a big deal."


    After reading the materials, Gao Chengfan said with a smile, "compared with this, you''d better think about what I should do with my commission fee. My fee is very expensive."


    "Well? Ah


    After staying for a while, neihai reacted and rushed to catch up with Gao Cheng: "no, I can''t take this case as if I didn''t say it, OK? I have no money... "


    "Have you ever heard of famous detectives who give up halfway?"


    "Please, sister!"


    Neihai was so anxious that he almost cried out and grabbed Gao Cheng: "I really don''t have enough money to repay the mortgage."


    "Can you write a report on it and apply for funds?"


    "Do you think it''s so easy to apply for funds?"


    The octopus in the inland sea wrapped Gao Cheng''s arm like a fish and refused to let go.


    Gao Cheng pulled and couldn''t get away, but he stopped and said, "you really don''t think about it? Now it''s only one step away from the truth. "


    "Well? You already know? "


    "Not yet, but it''s only a matter of time before we find out the truth. What the little girl saw was not the red line, but the red laser..."


    Gao Cheng took a piece of cardboard and drew a rough map of the area, including the location of the incident, where the little girl saw the red line, and several intersections.


    Seriously standing under the corner mirror at an intersection, a black hole similar to the crime scene on the warning board appeared in Gao Cheng''s line of sight, and there were several burnt black marks on the corner mirror pillar.


    "It''s not that simple..."


    Gao Cheng looks up at the hole on the warning board and sakuragawa at the end of the street.


    He handed the information back to neihai, and took out a few pieces of chocolate from his pocket. Gao Cheng pressed his eyebrows and sank into thinking. His brain ran rapidly and entered the one minute mode.


    Instead of cardboard, the virtual model of the whole area easily comes to Gao Cheng''s mind. Clues to the details flash through, the description of the inland sea, the conversation of nearby neighbors including Jin Senlong man, and countless pictures shuttle around Gao Cheng and finally gather together.


    In the block model, several red lines begin to extend back from the crime site in sakuragawa.


    The milk tip of the statue of a woman


    The stone duck''s eyes pierced in the river


    Billboards, advertisements, poles


    A red line converges on the corner mirror post, where something seems to have been installed, which can reflect the laser.


    "What''s the matter? What do you find? " Asked neihai anxiously.


    "There it is Gao Cheng ignores the shouts of neihai and suddenly looks back at the alley on the other side of the corner.


    The same red line extends from the warning sign on the corner mirror post and goes straight to the street lamp on the other side, where there is a metalworking factory, just where Kim Sen lung Nan works.


    Gao Cheng''s eyes tightened for a moment. After a minute, he quickly left the inland sea and ran to the street lamp.


    The same number of red lines extend through the factory''s top windows into the interior.


    The metal processing factory is still working. Many workers are cutting and welding beside the huge machine tool. Sparks are splashing and the sound is harsh.


    The factory director wiped his sweat to receive neihai: "what''s the matter with the police here?"


    "This," neihai looked at Gao Cheng, "is to investigate a case..."


    "That bad boy was burned to death?"


    "Er..."


    Gao Cheng walks around the workshop alone in the inner sea. His sight sweeps through the steel frame on the roof of the factory without any trace. He can see several black spots clearly.


    "Speaking of this," the employee behind a nearby machine tool saw Gao Cheng and asked, "it should have nothing to do with us, right?"


    Gao Cheng looks back and finds that it''s the man who talked to him yesterday“ Huh? Does Mr. Kinson work here? "“ Yes, I usually work as a volunteer after work, "Mr. Kim said with a forced smile." have you found out the cause of the fire? It''s just fireworks, isn''t it? "“ Fireworks still can''t burn like that, "Gao Cheng pondered." maybe it''s a supernatural phenomenon. It''s happened in some places. "“ Is that right? " Jinsen Longnan said with a smile, "it''s impossible to investigate."“ There is no way. Even so, we can only continue to investigate. Unless there is the same natural fire in the same place, the investigation can be ended, or we can''t write a report at all. " Gao Cheng sighed helplessly and said, "excuse me. If you find anything, please contact the police."“ Wait Neihai was pulled out of the factory by Gao Chenggang, and said angrily, "you are posing as a policeman again! Sister, I''m the police, OK? "“ When did I impersonate a policeman? " Gao Cheng said inexplicably, "it''s you who show them your identification."“ But the way you speak is that everyone misunderstands you as a policeman, right? He said, "I can''t write a report."“ I''m not wrong. If you don''t investigate clearly, you can''t write a report. " Neihai''s brow twitched: "I don''t care about this with you first! What about the truth? What did you find out? Why talk about supernatural phenomena? Don''t try to get the commission fee if you don''t make it clear! "“ Is there a commission fee? " Gao Cheng gave a light cough and explained as he walked: "I can''t verify it, but if it''s right, the killer should be that Jinsen Longnan."“ Kim Sen Long Nan“ I''ll wait until the police catch someone. I just stimulated him. In recent days, he should show his feet soon. " Gao Cheng added the metal processing factory on the board map, especially marked the inflection points and the route of the laser by the way.