The reason why Zhang Shou asked Ah Liu to invite Carpenter Sun was that he thought that when he was chatting with Carpenter Sun and others about various technical equipment these days in Lu Sanlang's small dark room, this strong man was very reasonable. According to Ah Liu, when Carpenter Sun was leaving, he whispered to Lu Sanlang that he was a warm and honest gentleman, and asked Lu Sanlang to think about how to explain it to him.
However, although he was brought here by Ah Liu as if he were kidnapped, Carpenter Sun quickly put aside his anger and devoted himself to work. He confirmed his judgment and was naturally more polite to this craftsman who was quite famous in the capital.
"I don't know where Emperor Taizu got this thing from, but I also know that it would be difficult to make another one that is exactly the same. But, Uncle Sun, look at these small nails on the four corners, aren't they different from ordinary nails?" Zhang Shou tried his best to induce Carpenter Sun to pay attention to the four cross screws, and then began to use his trickery.
He first explained the mathematical principle of spirals, which made Carpenter Sun dizzy, and then he drew a picture of a screw on paper, and then tentatively put a screwdriver on the table. Sure enough, Carpenter Sun didn't understand the theory very well, but when it came to practice, Carpenter Sun, who had devoted his life to studying various woodworking, nodded thoughtfully.
"Well, I roughly understand what you mean, Dr. Zhang. You want to remove these four things that you think are screws, and you think you need a screwdriver like this? However, I'm not very good at this, so I'm afraid I'll have to ask the blacksmith, Old Zhang, for help."
Zhang Shou had anticipated Carpenter Sun's proposal and smiled. "I will certainly ask Master Zhang to help me. But I have another idea about how to make screws and screwdrivers. For example, instead of manually polishing them after casting, is it possible to use tools to shape them?"
Before Carpenter Sun could decide whether it was feasible or not, he immediately said, "The Emperor gave me the Taizu's relics, maybe he wanted to figure out the mystery. Of course, Master Sun, you and Master Zhang are famous craftsmen in the capital, and I know how much work you have in hand. I'm afraid you don't have that much time to spend on something that requires a lot of time and energy."
If Carpenter Sun had some liking for Zhang Shou because of his appearance and his attitude towards people, which was why he was able to gradually calm down after being "kidnapped", then, after hearing these unusually considerate words, he simply felt that it would be too unreasonable if he really could not help at all.
Besides, the goal is to solve the mystery of Taizu’s relics. If he makes some contribution, he will have something to brag about in the future!
So, he thought of a solution in a hurry, and he smiled as soon as his eyes rolled: "Dr. Zhang, if the great grandfather in heaven knew about your painstaking efforts, he would definitely bless you. How about this, I have a large number of disciples, I will pick a few to help you, how about that?"
Before Zhang Shou could agree or refuse, Carpenter Sun said righteously: "Old Zhang has a lot of apprentices. As long as I ask, he will know that you need help, and he will definitely send his best apprentice to help!"