How did a street urchin from the film crew end up in a Northern Song Dynasty drama called "The

"In that case, immediately send people to purchase a large quantity of this item. Furthermore, daily lime water must be evenly sprinkled throughout the courtyard. At the same time, prepare several rooms in the backyard as soon as possible. If anyone develops a fever, they must be isolated immediately. Liu Ma, gather all the women to expedite the production of masks, the more layers the better. Once finished, boil them in boiling water. Each person should be provided with at least three masks, and they must be boiled again for disinfection after one day of wear. They must wear them at all times except when eating or drinking. After each of the three daily meals, everyone must drink a decoction made from large green roots. This is an order; those who disobey will be expelled from the Jin residence. Have people supervise each other's implementation. I absolutely do not want to see anyone in the Jin residence fall ill. Go and make the arrangements!"

Once everything was in place, Jin Shuai thought to himself: "The time for a large-scale outbreak is almost here. The bigger the storm, the more expensive the fish will be." Then, he turned and went into his study, where he began to peruse various history books.

Time flies, and this tense yet orderly life has continued for three whole days... That day, after breakfast, Jin Shuai was trying on the clothes the woman had made for him. They were simple and elegant, but the Song Dynasty clothes were too awkward; looking at himself in this outfit, he felt as if he had been transported back to the 80s. Just then, the blacksmith foreman came over, smiling, and told Jin Shuai that the forge was ready and they could begin work. Hearing this, Jin Shuai followed him without hesitation to check on things.

Standing before the furnace, Jin Shuai watched intently as the craftsman carefully poured molten metal into the mold, beginning the casting of the crucial spring steel plate. Once the first plate was formed, Jin Shuai picked up a small hammer and tapped it, listening intently to the sound. However, the sound made him frown slightly—something was clearly wrong. It sounded too crisp, indicating that the steel plate was too fragile and prone to breakage.

So, blacksmith Jin Shuai smashed the steel plate hard with his large sledgehammer. As expected, a crisp "crack" was heard, and the steel plate instantly broke in two. Jin Shuai stepped forward and carefully examined the fracture. After a while, he concluded that there were too many air bubbles; it wasn't steel, but rather a transitional state between wrought iron and steel. The quenching was also incorrect. He told someone to get some tung oil and have the craftsman quench it with tung oil later to increase its toughness.

Jin Shuai stared at the broken steel bow, lost in deep thought. The temperature must be insufficient; yes, the lump coal didn't reach the calorific value of coke, and the coal couldn't provide enough heat to remove impurities. There was no catalyst either. Thinking this, Jin Shuai pondered briefly, then thought to himself, "Damn, I'm from a coal-mining city in southern Shandong. How could a mere piece of coke possibly stump me?" He immediately and decisively gave the order for everyone to quickly dig a large pit. Next, they poured the red-hot coal into the pit, covered it with soil, and finally poured water on it to accelerate the cooling process.

Time ticked by, and everyone held their breath, waiting silently. A full hour later, Jin Shuailing gave the order, and the coal was dug out… the ordinary coal had transformed into coke, though not of high purity!

Jin Shuailing was overjoyed and couldn't wait to have the foreman try smelting molten iron with inferior coke. This time, when the cast spring steel plate was repeatedly hammered down with a large iron hammer, an astonishing scene appeared—the steel plate had become elastic and didn't break. He picked up the steel plate, looked at it, and said, "Haha! This is good enough. From now on, you can use this method to make the rest of the parts! The carriage is all done, only the spring steel plate is missing." The craftsmen began to devote themselves wholeheartedly to the bustling production work...