"Don’t ask about the process, just take the result," Qu Jianlei didn’t even look at him. "Plenty of people want to be my apprentice... Do you think you’re worthy?" "Hurry and bring the main shafts over, we’re in a rush to go hunting." A group of people exchanged puzzled looks for a moment, but ultimately turned and left. About half an hour later, a few of them returned with three main shafts. After placing the main shafts down, everyone else left, leaving only Geng Shougong standing alone. This reaction was interesting, so Qu Jianlei didn’t avoid him any further. He circled around the three main shafts, examining them repeatedly, then touched each one and knocked on them. Geng Shougong kept watching intently, his brow furrowed tightly: Is this how he detects them? After making a round, Qu Jianlei spoke up, "All three main shafts... just scrap them all." "Huh?" Geng Shougong pointed to one of them, "This one has a problem too?" "There’s a hidden flaw," Qu Jianlei answered straightforwardly, "There’re sand holes inside, quite a few, it should be a substandard product." "Sand holes..." Geng Shougong was taken aback, he initially thought this shaft was good. In fact, in the eyes of the Wasteland people, parts with sand holes aren’t considered a big problem. That’s how it is in a resource-scarce society, as long as it can be barely used, it’s fine. Sand holes just reduce the strength and durability of the component. Of course, if it’s found out that it’s "passed off as good," then it certainly can’t be sold. However, in the next moment, his shock was replaced by a stronger curiosity. He couldn’t resist any longer and asked, "Would you mind explaining how you detected it?" Qu Jianlei turned his head to look at him and saw that besides curiosity, his eyes were clear. He looked for four or five seconds, then sighed and asked helplessly, "What’s the principle of the ultrasonic flaw detector?" "Of course, it’s based on echo reflection..." Geng Shougong answered instinctively, and then he froze. "That’s right, it’s the echo," Qu Jianlei naturally asked, "Didn’t you notice I knocked on each shaft?" Geng Shougong had considered this, but the possibility... was just too hard to accept. Even after getting confirmation from the other side, he couldn’t help but say, "Isn’t this a bit far-fetched?" Qu Jianlei didn’t mind the offense, as he knew well that his answer was a bit incredulous. He just stated calmly, "Just because you can’t do it doesn’t mean others can’t." Apparently, you haven’t heard of the legendary grade-eight machinist... or even greater tales of grade-eight plus. Geng Shougong was stunned for quite a while, before nodding slightly in disbelief, "So, what are the problems with the other two main shafts?" "Since they’re scrapped anyway, why ask so much?" Qu Jianlei didn’t plan to satisfy his curiosity. Showing a little is enough, survival in the Wasteland requires some modest concealment. But his attitude wasn’t too bad either, "Go back and check this main shaft for sand holes, and you’ll see I’m right." "I definitely will," Geng Shougong nodded without hesitation. "It’s not that I don’t believe you, it’s just that this is too unbelievable, the process of making a main shaft... how can there be sand holes?" "I know," Qu Jianlei nodded in strong agreement, "I’m also very curious, that’s why I knocked on it more while testing." Tech enthusiasts can easily get lost when talking about technical matters. However, Geng Shougong still had some official identity, so he asked casually, "Have you taken the Maintenance Master certification?" He wanted to determine whether this person was only skilled in this aspect, or if he was strong in other areas as well. Qu Jianlei didn’t answer directly but instead asked, "Why get certified?" "Why not get certified?" Geng Shougong got successfully sidetracked, "Wouldn’t it be nice to have a job that’s stable in any situation?" Qu Jianlei replied indifferently, "I don’t like a life where you can see the end at a glance." This perspective is somewhat similar to the rebellious girl Claire, but he genuinely doesn’t like a plain, uneventful life. Geng Shougong was defeated by this answer, he had to admit, some people simply aren’t content with being mediocre. So, there was no need to continue this topic, "If there’s a job with high maintenance difficulty in the future, would you take it?" "Depends on the situation," Qu Jianlei answered offhandedly, "I don’t really need that bit of money." A bit of money... Geng Shougong remained speechless, in less than two days you earned four hundred silver coins, and you call that a bit of money? He could sense that the other side truly wasn’t short on cash, the equipment and layout in the courtyard already indicated that. However, does he have to have such a big mouth? "Can you handcraft a compliant engine?" Qu Jianlei thought for a moment, then nodded slightly, "An engine that’s not too difficult, shouldn’t be a problem." Thɪs chapter is updated by novel•fire.net "But I’m not really interested, it’s too time-consuming, no need to make a living from this." Not interested... Geng Shougong was speechless again, but through this answer, he essentially assessed the other side’s repair skills. Just with such skill, obtaining a C-level Maintenance Master certification should be no problem. If there are no obvious weak points in other aspects, getting a B-level certification shouldn’t be hard either. How could such a mechanical repair expert be so disinterested in their specialty? Geng Shougong wished he could force this guy into the Settlement, to not waste his talents. But then again, if this person actually went down this path, he would be eligible for A-level certification, which Zhou Six... wouldn’t be able to retain him. For him, discovering an A-level Maintenance Master is an achievement, but improving local maintenance skills and prospering the market is also an accomplishment.