The second item is very interesting, it is three Luban locks.

Luban lock, also known as Kong Ming lock and gossip lock, is an intellectual toy that spreads among the people.

But this toy is not for children, it is too difficult.

Its origin is the mortise and tenon structure of carpenters, which was originally made from six wooden strips.

The wooden strips are made of tenons and tenons, which are cross-bitten by different structures, which are interlocking and very complex.

The Luban lock is a whole, and the goal is to untie it into loose strips of wood.

But only by understanding its true structure and finding its original "thread" can it be completely unraveled. Otherwise, in the face of such a square whole, I am completely confused, and I don't know where to start.

Legend has it that Luban is a puzzle toy made by Luban for his son, and there were only six wooden strips at the beginning, which was relatively simple.

But as time went on, it was constantly renovated and became more and more difficult.

Kong Ming chain lock, twelve square locks, sister balls, three three knots...... There is a lot of variety, and there are countless of them.

The three Luban locks that the elders took were different, and Xu Wen laughed when he got it.

A Kong Ming chain lock, a square lock, a four seasons lock. They are all folk for many years, and the difficulty is relatively large.

"Is it okay to take them apart?" Xu Wen asked casually, playing with one of them.

"Yes. But it's a bit of a time limit......" Uncle Jing replied, his tone much more cautious than before.

Before he could finish speaking, a pile of wooden sticks fell from Xu Wen's hand and fell to the ground.

"I should pick up something...... Xu Wen patted his head in annoyance, bent down to pick up the wooden stick, and put it into the small box that had just been loaded with Luban lock.

It took less than a minute before and after his move, and the longer of it was used to pick up the sticks and put them back on.

Xu Wen picked up the second Luban lock and glanced around.

The pavilion is spacious, and it doesn't block the light, everything else is good, but there is no place to put things.

"I'll take it for you. Lu Yuan stepped forward, picked up the box, and said as a matter of course, "It won't take long anyway." ”

"Hmm. Xu Wen did not refuse, and in an instant, another pile of wooden bars fell, this time directly into the box, and was stacked completely in the second grid.

- This Luban lock was placed in this grid just now.

Then came the third, the Four Seasons Lock, which also turned into a wooden bar in less than ten seconds, and returned to the box where it had been placed.

Bai Liqi and Ma Yushan originally thought that this exam would take a long time, and they were wondering whether to find a place to sit and watch.

As a result, before the ass could find the ground, Xu Wen had already completed it.

"I ...... Depend on. Baili Qi sighed.

"If it were me, I would have seized the opportunity to ask the old man. Hey, didn't you say that there is a time limit? How long does it take?" Ma Yushan lowered his voice and said in a pinched tone, and was arched by Baili Qiang's shoulders.

"Fuck off, do you think everyone is pretending to be like you?"

But when Baili Qi looked back, he also felt quite refreshed, and grinned.

Xu Wen finished unlocking the lock, put the wooden strip back into the box, and Lu Yuan directly held it in front of the elders.

They looked down and looked a little blankly - until now, they hadn't reacted.

These Luban locks are carefully selected by them, and a little more changes have been added on the basis of tradition......

This thing wasn't made by Xu Wen, why could he solve it so quickly?

No, you can't say that.

Luban lock, even if the maker solves it himself, it takes some time to think about it for the first time.

After all, problem solving and problem solving are two different processes and should not be mixed up.

"I don't even know why you're asking this question. Lu Yuan raised his head to look at these elders of the grandfather's generation and said bluntly.

The elders looked at him stunned, not understanding what he meant.

Lu Lihai walked over, picked up a wooden strip in the box, looked at the raised or concave structure on it, and sighed.

"Xiao Yuan's words are not good, but this time I have the same thoughts as him. The source and core of the Luban lock are mortise and tenon joints, as we all know, there are only a dozen kinds of mortise and tenon joints left in the mortise and tenon structure of our class door, and the Luban lock has changed around on it, how many tricks can it change?" he smiled helplessly.

"There are more than twelve!" Lu Yuan suddenly objected to what his father said, "Last time, Xu Wen told me that there is no limit to the number of mortise and tenon joints, and you can have as many as you want." I've drawn forty-seven more in the past two days, which can also be counted in our class. Now we have fifty-nine mortise and tenon joints in our class, and I can come up with more!"

He said confidently, his eyes shining.

Lu Lihai looked at him, the helplessness in his eyes disappeared, he suddenly turned around and saluted Xu Wen again.

Xu Wen's words opened a new door for Lu Yuan, Lu Lihai saluted on behalf of his son, and Xu Wen did not refuse.

However, the elders were all shocked by Lu Yuan's words, and looked at him blankly, their eyes vibrating, as if they were repeatedly recalling what he had just said.

After Lu Lihai finished saluting, he urged up: "What about the third topic, hurry up and pick it up, there are still things to do later!"

He said, looking at the boxes behind the elders. There are still five or six mouths that haven't been opened, presumably the exam questions prepared for Xu Wen.

Xu Wen also nodded, and then went to look at the boxes. As a result, several elders took a step back in unison and protected the box.

"No, it's gone! That's it!" Lu Wu shouted.

In the two exams, Xu Wen's level was undoubted, but the most memorable and shocking thing for the elders was Lu Yuan's words.

This sentence revealed another realm, another reason that made them understand why Lu Lihai would ask Xu to distinguish the authentic and authentic scrolls!

"I'm sorry......" Third Uncle Jing suddenly stepped forward, bowed to Xu Wen, and bowed deeply, "It's because we have a narrow vision, and I hope Mr. Xu won't worry about me, please go to the Zongzheng Hall, the authentic Zhengjuan!"

He persuaded and agreed, and apologized when he apologized, Xu Wen didn't expect him to soften so quickly.

But he quickly figured out why.

These elders of the class are really stubborn and conservative, and they are a little bit dependent on the old and selling the old, but they are really selfless, and their hearts are all for the sake of the class.

Therefore, when they found out that Xu Wen was indeed capable of helping the class, they relented and did not continue to fight against him.

In the final analysis, they and Xu Wen do not have a conflict of interest, but have some similarities.

It's kind of a bit of a talk......

Xu Wen thought in his heart. He didn't even realize that when he faced these elders who were much older than him, he unconsciously had some mentality when facing juniors.

Jing San was the first to soften, Lu Cungao was a little surprised, but he immediately came back to his senses, and then bowed down and said, "Please Mr. Xu to the Zhengjuan, the Zhengzong Zhengjuan!"

Two people took the lead, the other elders subconsciously followed, and then the disciples followed.

More than 20 people saluted Xu Wen together, and the momentum was a bit amazing.

Xu Wen stood in the pavilion, facing such a scene, neither humble nor arrogant, and his face did not change.

"Let's go. He said.