Zhang Gou scratched the back of his head, handed the sextant in his hand back to Wang Zhen, and said with a silly smile: "Don't worry, sir, I will study hard."

"Sir, I believe you. I was born in a poor family. Now I am the leader of Lingnan. Besides my decent qualifications, it is because I work hard. Children from poor families like us have no place to shelter from the wind and rain. If we want to avoid being blown by the wind and rain, we have to run hard."

Wang Zhen nodded, took the sextant and put it in the box, then said, "Let's not talk about this now. Let's eat first. After dinner, the teacher will give you a lecture."

Wang Zhen looked at the leftovers on the table and felt that something was missing. In order to prevent his two disciples from feeling too restrained, he took the box back to the inner room and took out two cans of seafood and handed them to Zhang Gou.

"Put it in the rice steamer and scald it with hot water, otherwise it will be difficult to open."

Although Zhang Gou was a little confused, he still followed his instructions and scalded the glass bottle in the boiling water of the rice steamer for a while before taking it back.

"Open it. Just twist it in the direction you want."

During the break, Zhang Gou exclaimed: "The food cooked by the gentleman is really delicious."

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Wang Zhen thought for a moment, then turned back inside and took out another glass can, handed it to Fang Zhao and said, "Teacher taught us that truth comes from practice. We will know if it is true or not after we try it."

There were paper-thin crumbs at the mouth of the bottle and the thread of the bottle cap, which were invisible unless you looked carefully. Fang Numa rubbed a little of the crumbs with his fingers and found that they had melted away and felt a bit slippery. He couldn't help but ask, "What is this?"

"What's going on sir?"

Wang Zhen walked leisurely in front, swinging his hands, Fang Zhao followed him, and Zhang Gou followed behind.

"Gel."

Wang Zhen explained: "That direction feels convenient, so just follow that direction."

In this case, in addition to letting air inside, the only way to open the bottle cap is to reheat the bottle to make it expand again. Try heating it now."

In the past, when your master had nothing to do, he would use a lot of seasonings to refine sesame oil, then seal it and let it sit for a while. When it was time to use it, the smell was so unforgettable.

“Heat expands and cold contracts. The snail meat is hot when it is put in the bottle. After the bottle mouth is sealed, it cools down naturally and contracts, which naturally sucks the bottle tight.

Zhang Gou nodded and said with a smile: "Sir, you are right. I was overthinking."

Of course, the firing of colored glaze must also be extremely delicate, otherwise more gelatin must be filled in. It doesn’t matter if seafood has a little more gelatin.

"Is that the way it goes?"

If it is canned fruit, it won’t work. If some gelatin gets into the can, the taste will be terrible. Fortunately, after so many years of development, the glass firing technology has become mature enough. "

Fang Numa took the bottle and twisted it with the same force as before. When he found that the bottle cap did not move at all, he immediately increased his strength. After trying twice, Fang Numa gave up.

"Gel?"

Fang Numa smacked his lips and said, "Sir, walking like this is really leisurely, it's as if the whole person is relaxed."

“Using the gelatin made from pig skin, you only need to apply a little bit on the thread edge to seal the bottle. This way, seafood can be preserved for a long time after being cooked. Otherwise, canning is just empty talk.

Wang Zhen laughed and said, "That's not true. The two dishes taste the same. In fact, the freshly cooked dishes have more seasoning.

Let's go, after we rest for a while, let's walk around in the yard. This is a habit your master has cultivated for us. Resting for a while after a meal and walking around can help us adjust our whole state of mind."

Fang Zhao snickered, Zhang Gou blushed and lowered his head, Wang Zhen sighed and said: "Sir, I am not disliking you, your left and right hands are the same, it is not a defect, it is just a habit, please don't mind it.

Wang Zhen pulled the corner of his mouth, "Isn't this referring to left-handed people?"

Fang Zan joked, "Of course you are overthinking it. With your knowledge and practice, how could he care which hand you use to exert force?

After opening three one-pound cans of food and adding some leftovers, the master and his two apprentices ate heartily.

Sir, this is easy to open. Will it be hard to open if you don’t scald it with boiling water?”

"Haha, it's just made of sand. It's essentially no different from ceramics. The current price is just returning to normal."

Fang Numa looked at the glass bottle and said, "It's still better than ceramics. Ceramics can't be so tightly sealed and airtight."

"Let me do it." Fang Numa took a can and opened it.

"Hahaha."

Zhang Gou grabbed the bottle cap with his left hand and twisted it hard, wondering, "Why can't I open it?"

In our Yuzhou school, even disabled people can study normally. Among your master's disciples, there are people with broken hands and feet. It is rare to have a strong will despite being disabled. What's more, you have good hands and feet. "

Fang Zhuo took the can and scalded it. After opening it, he sighed, "My father once said that colored glass was a very precious item, but it became cheaper and cheaper soon after. Now, such exquisite colored glass is only used to hold canned food."

Wang Zhen shook his head and reminded: "This bottle itself is not airtight, just look at the thread between the bottle and the cap and you will know."

The reason why you think canned food tastes better is that the canned food has been left out long enough, and the various flavors have been thoroughly blended after fermenting over time, so the taste will naturally be better.

Wang Zhen laughed, "Haha, this can be considered as one of the inheritances of our Yuzhou lineage."

"Oh, what do you mean?"

"Our Yuzhou faction has developed too fast. No matter how great our abilities are, they are bound to be left idle. If we are always in a hurry to accomplish things, it will probably do harm. After all, your master doesn't want to cause great suffering to the people.

So, your master came up with this method which is not a method, to make our life more leisurely, and at the same time let us adapt to the leisurely life, so that we can calm our minds.

Although the consequence of doing so will make us always take our time when doing things, it is not a problem when governing a region. After all, small things are urgent, and big things are slow. The bigger the matter, the slower we should go. Making a mistake is much more serious than not doing it at all. "