Chapter 15<ol start="3"><li>Old steel(5)</li></ol>


    After walking out in front of the Seosomun Government Complex, Yun Jaegil gave a detailed ount of the ident he just heard from his secretary.


    Jeong-woo was surprised to hear that the rain collector he saw in the morning had fallen down.


    Can youe with me? I have something urgent to ask.


    Jeong-woo looked embarrassed.


    Well


    Looking at Song Boyeong and Bae Ki-tae, who were curious about what they were talking about from a distance, Jeong-woo shook his head.


    Its still working hours, and Im on a business trip.


    If it hinders your work, wellpensate you ordingly. Our research center vehicle will arrive soon.


    He couldnt help but be suspicious of those words.


    Compensation?


    Well pay you the equivalent of a research consulting fee. Since we have a good rtionship with the director of KG Chemical, we can get your understanding.


    The fact that someone who seemed so strict suddenly changed his attitude meant that the situation of this ident was serious.


    Jeong-woo didnt know exactly what research consulting meant, but he thought he could help for a while and earn some money like a part-time job.


    My wallet is not exactly overflowing. But wait, how much do they pay for consulting fees?


    After getting permission from Yun Jaegil, Jeong-woo walked towards Song Boyeong. With a curious expression, Song Boyeong asked him right away.


    What did you talk about?


    He asked me for help.


    Now? What is it?


    He seems to want advice from me about an ident that happened on the Han River Bridge.


    Bae Ki-tae, who was listening from the side, had to doubt his ears.


    You? Jeong-woo?


    The fact that a key employee of Yujin Chemical was asking for advice from an intern at KG Chemical was a big deal.


    Upon seeing Yoon Jaegil standing still on one side, Bae Ki-tae lost his words. But seeing how serious Jeong-woos expression was, Bae Ki-tae felt chills down his spine.


    Jeong-woo asked Song Boyeong, How long do we have to stay until we can go back?


    Until before the end of work.


    Can we ept? I told Yoon Jaegil that we would let him know. Well have a car too.


    Of course, we have to. The Han River Bridge is an important facility for KG Chemicals as well. If we want to smoothly continue with the railway construction and next years business, we should help with rted issues in good faith.


    At the same time, Song Boyeong stuck close to Jeong-woo.


    And I have to stay close to escort Mr. Parachute, right?


    Its okay. Im not a three-year-old child.


    Oh, youve only been here for five days. Seniors should take care of their interns.


    Jeong-wooughed at Song Boyeongs subtle desire to follow him, pretending to be considerate.


    Since when have you been taking care of me like this? Why didnt I know anything about it?


    Song Boyeong poked his side and whispered, Stop talking and lets go. She seemed embarrassed.


    Meanwhile, arge white bus equipped withmunication equipment arrived in front of the Seosomun Court. It looked like a special purpose vehicle even at first nce.


    Bae Ki-taes eyes widened. Isnt that the Yujin Chemical Mobile Research Center? Looks like things went well.


    Since it was notmon to see advanced equipment from otherpanies, Bae Ki-tae approached Jeong-woo and said, Jeong-woo, is there any space in that car by any chance?


    When Yoon Jaegil shouted, Lets go! in front of the bus, Jeong-woo didnt even listen to Bae Ki-taes words and ran towards the bus.


    Ah, Bae Ki-tae.


    Song Boyeong called Bae Ki-tae, You go first and tell Senior Oh that the seminar went well. Ille backter and tell her the details.


    Shouldnt I alsoe with you, senior?


    Mr. Parachute, lets go together! She followed Jeong-woo without waiting for a response, and Bae Ki-taes shoulders slumped.


    Chi-iik


    The door of therge bus opened and Yoon Jaegil, who had gotten on first, beckoned Jeong-woo, and Song Boyeong.


    Come in.


    Jeong-woo couldnt help but admire the special equipment vehicle where even the external door was sealed off.


    Wow, theres even a car like this in the world.


    The inside was filled with experimental equipment and machinery, creating an atmosphere of a makeshift researchb. Jeong-woo walked inside the bus, admiring the expensive equipment tightly arranged all around. Then, his eyes met with a woman in her mid-thirties who was already standing in her ce.


    Hello.


    He reflexively greeted her, but her returning gaze was chilly.


    Who are these outsiders, Director?


    Oh, team leader. They are the people who will help us deal with this ident. Theyre from KG Chemicals.


    KG Chemicals?


    The woman looked surprised as she looked at Yoon Jaegil. Her gaze conveyed that she couldnt understand why rivalpany employees were here, especially when the incident was severe enough to cause serious damage to Yujin Chemicals reputation.


    Mr. Han Jeong-woo. This is Joo Hana, the team leader of Yujin Chemicals Total Care.


    Even Song Boyeong, who was standing behind Jeong-woo, nodded her head, but Joo Hana seemed to be listening while also turning her gaze to the monitor.


    Team Leader, since youre busy, shall I pulling up the data for the Han River Bridge?


    The results of the safety inspection of the Han River Bridge conducted in Octoberst year appeared on the monitor. Joo Hana raised the structure near the ident site taken with X-rays.


    At around 1:40 pm this afternoon, a rainwater collector whose bolt had loosened fell toward Gangbyeon North Road. The length is about 10 meters, and it seems that the loosened bolt could not withstand the weight, causing it toe off.


    Yoon Jaegil, who was examining the results of the metal fatigue and durability tests, looked at Jeong-woo.


    Is this the ce you discovered this morning?


    Im not sure. Are there any ordinary photos avable? Preferably ones that are clear.


    Jeong-woo asked, and Joo Hana turned her head.


    You can see something with the naked eye?


    I think I would know if I saw it.


    Joo Hana looked at Yoon Jaegil with an expression that questioned who he was.


    Trust me. Hes not an ordinary guy.


    Finally, a high-resolution picture appeared on the screen.


    Jeong-woo watched the screen and nodded as he discovered a bolt amidst the rampant free electrons.


    Right here. Im not sure when this photo was taken, but the corrosion seems to be less progressed than in the morning.


    Corrosion? The rain gutter fell off because it couldnt withstand the shock apanying the increase in railroad logistics.


    Is that so? It wasnt like that in this photo, but the bolt was quite damaged.


    Hey, take a look at the durability test data.


    Seeing Joo Hanas sharp gaze, Jeong-woo thought it was not necessary to fight and took a step back.


    Are you a bridge expert?


    Just as you see. And what about you?


    Well, I cant really say Im an expert.


    Joo Hana had an air of not believing anything he said. Yoon Jaegil, who was standing silently, seemed to be urging Joo Hana to be persuaded, but he didnt say anything.


    As expected. Chemicalmunication is the biggest problem in times like this.


    Jeong-woo nced briefly at Yoon Jaegil and recalled what had been effective in the seminar. He was gaining a little more confidence now.


    Let me give it a try.


    Thinly opening his eyes, Jeong-woo scanned the face of Joo Hana. He could see traces of typical makeup ingredients, food, bread crumbs, and coffee. And a peculiar molecr structure that she discovered, it was someones saliva.


    It seems like you like kisses.


    What did you say?


    In Jeong-woos eyes, a cute molecule with legs and a tail like a cat appeared. Watching the creature lick its front paws, Jeong-woo spoke.


    Your mouth and cheeks are covered in cat saliva.


    Joo Hanasplexion changed as she covered her cheeks with her hands. But then she remembered that the man couldnt have known about her kissing Kiki, Toto, and Bubi just before leaving for work.


    Dont hit other peoples affairs like that.


    Joo Hanas gaze sharpened since the man who imed that there was a hole in their total care system made this guess.


    It seems like there are two of them. The enzyme, lysozyme, is subtly different between the two. One of them shows more active behavior. Is their personality also like that?


    Thats


    Joo Hana looked at Jeong-woo with a gaze that said, How on earth?


    Chemical inference. Something like that.


    As Joo Hana seemed to acknowledge this endless inference, Yoon Jae-kil smirked. Suddenly, he wondered if there was any chemist who could resist Jeong-woos brilliant chemical knowledge.


    Team Leader Joo, living alone, huh?


    Yoon Jae-kil looked at Joo Hana as if pitying a 33-year-old spinster who kisses her cat every day.


    Dont misunderstand, Center Director.


    No misunderstanding. Its just unexpected that Team Leader Joo has a cat.


    Joo Hana sighed. She had only been living like this because she loved her job more than meeting men, but she felt unfairly defensive and wanted to keep justifying herself.


    Thats a misunderstanding.


    Oh, sorry, sorry.


    Joo Hanas face turned red as she felt embarrassed about her personal preference that she didnt want to reveal in front of her boss. She looked at Jeong-woo and asked, How could you tell?


    I dont think theres a need to tell the rivalpanys team leader about my own chemical expertise. Lets go back to talking about that bridge


    Taking advantage of Joo Hanas brief distraction, Jeong-woo quickly spoke up, Its not that the research data from Yujin Chemical is wrong. There is a usible exnation for the phenomenon that has already urred.


    Jeong-woo filtered his chemical knowledge that came to mind and expressed his opinion in anguage suitable for this world rather than intuitive logic through eyes that peer into the molecr world.


    Just because you use good ingredients doesnt guarantee that you will make delicious food. The timing of processing and cooking the ingredients varies from person to person, so you cant necessarily say that the data or chemical forms are a perfect structure. Wait a minute, can I have the mouse?


    Jeong-woo took the mouse from Joo Hana and began to freely examine the screen.


    As far as I saw this morning, there are significant differences in the metal materials of some bolts and rainwater gutters. Bolts with a high potential difference and bolts without. Of course, the side with therger bolts will corrode more.


    The bolts looked the same on the surface.


    There may be variations that even ordinary people can easily find


    Jeong-woo scanned the picture for a while and then flicked his finger. After erging a certain part as much as possible, he pointed to it with his mouse pointer.


    This is the chemical reaction I detected. Not all bolts have the same metalposition.


    Two bolts with slightly different colors appeared on the screen.


    See?