Sang Lan's father was annoyed: "Nonsense, I haven't seen this thing before!" ”

Seeing that Ji Yayun had dropped my backpack next to his bed, I went over to pick it up and took out the wooden box with a copper lock from it.

"I'm giving you a lock, not a Ring Key."

I smiled, opened the wooden box, took out the copper lock first, then flipped the wooden box, pinched both ends of the wooden box with two fingers, and pressed it gently.

When I turned the wooden box upside down, and then looked at the wooden box, it was already changing.

The wooden box itself is not delicate, and even a little old on the outside, but it has a red velvet lining on the inside. Looking at the size, it looks like it was tailor-made for copper locks.

With this movement, when the wooden box was turned over again, the velvet on the sides was still there, but the bottom was turned the color of wood.

Not only that, but there is also an extra ring-shaped groove in the middle.

I took off my wrench and put it in, just stuck in the groove.

I repeated the same action again, and once when I turned over the wooden box, the wrench was gone, and the inside of the box changed to the velvet liner that I had seen for the first time.

"There's a dark compartment in this box!" Sang Lan's father finally reacted.

I nodded, "If you want me to say, the original function of this box is to hold the wishful wrench." Placing copper locks on the surface, or some other object of similar size, is just a cover-up. ”

Sang Lan's father muttered, "The box was given to me by Han Sheng, and he handed me the copper lock and wrench, what does it mean?" ”

I couldn't help but laugh and said: "You think too much, although this copper lock is a little old, but looking at the style, it is not rare." He gave you the stolen stolen goods from his father as a birthday present, just to buy them from you. Most of him didn't know that there was anything wrong with this wooden box. ”

Seeing that Sang Lan's father was suspicious, I simply told the details of Lin Fu taking Professor Lin and the other three to visit the ancient mansion at night.

Finally, I said to Sang Lan's father:

"When I listened to the two professors tell me about this, I felt strange. Lin Fu is definitely not right-minded, but even if he has the intention to steal, and he is a little crooked, the process is inevitably too seamless.

Not to mention the success of things, except that he was almost beaten to death by Professor Gu when he saw it temporarily, and then the two professors wanted to report him because of scruples. Ordinary thieves, how can they have such scheming?

Now I finally understand that this Lin Fu is a thief nine times out of ten, and he is the most despicable thief among the eight thieves outside! This wishful wrench is the best proof! ”

Ji Yayun couldn't help but ask: "According to what you said, the Ruyi wrench should be a thief stealing an heirloom, why doesn't Lin Hansheng know that the wrench is hidden in this box?" ”

I smiled: "Thieves steal things, except for a few who have a special pathological psychology, most of them are not for money? In a certain era, the wealth from the sale of the Nanzhu stolen by Lin Fu was enough to make him a large sum. With money, how could he let his son be a thief again? ”

Sang Lan's father nodded, then suddenly frowned again:

"When you asked me for this copper lock, you already knew that there was a wrench hidden inside? You snuck in at night to make sure that this thief could open the door of my house? ”

As he spoke, he became angry again: "Even if that's the case, what is your intention in running into my sister's house?!" ”

The 'sister' in his mouth refers to Ji Yayun.

In previous contacts, I have already seen that Sang Lan's father is indeed a very good person, and after the death of his ex-wife, he only treats Ji Yayun as his own sister, which is nothing more than a thought.

That's why he was so angry about my 'hooliganism'.

At this point, I already figured out some of the joints because of the images that flashed in my head.

He immediately said to him: "When I got this copper lock, I never knew that there was a mechanism in the box. Now, I admit that I used my Ruyi wrench to open the door and second door of your house and sneak into Ji Yayun's room. But...... It was only after I saw this wrench that I thought that there was a mechanism flap in the box, and I thought about the whole thing. ”

"Isn't that a contradiction in what you say?" Not only Sang Lan's father's face was unhappy, but even Ji Yayun and Dong Yaru also showed a confused look.

I turned to Ji Yayun: "What happened after I fell asleep in the post station?" ”

Ji Yayun bit her lip, "I just remember that Lao He suddenly got angry and said that if you fall asleep, it will kill you." Then, you really fall asleep. And then ...... Then the inn disappeared all at once. I'm back to reality...... What am I talking about...... You get the idea, right? ”

"Yes. Do you remember that before I fell asleep, someone walked up to me? ”

"Is it another you?" Ji Yayun's eyes widened, "Little grass head fairy? ”

I nodded, "I don't really know what happened after that, I just know that I fell asleep and woke up with you in my bed."

It wasn't until I held the Ruyi wrench in my hand just now that I suddenly had some more images in my mind. It's like a drunken fragment who recalls some details one after another. ”

Speaking of which, I handed the wooden box to Sang Lan's father, "Take out the wrench." ”

Sang Lan's father learned the gesture I just made, pinched the ends of the wooden box with his fingers, and pressed it hard, but the wooden box did not respond.

He was definitely not stupid, and after thinking about it for a while, he immediately turned the wooden box around and pressed it again.

However, there are still no changes in the box.

I took back the wooden box, put the copper lock in it, took it out again, flipped the wooden box, pressed it, and then reversed, and the dark grid in the wooden box really appeared again.

"How so?" Sang Lan's father was dumbfounded.

I said, "A long time ago, there was a period of convergence between the Outer Eight Elements. After that, although they separated, they more or less mastered some crafts of other families between the various industries.

This small box looks unremarkable, but it is the design of the trap door. It contains at least four kinds of pins, circlips, springs, flaps, etc. and even more mechanism designs.

Let's put it this way, putting a copper lock or something of similar size and weight in it is the first step to unlocking the mechanism; Turning the box in reverse is the second step, and pressing the ends is the third step.

But there is also one of the most important and ingenious designs in the midst of this. That is, there is an interval between the opening of the mechanism, and the first time you can use the above steps to open the dark grid, but you must open the dark grid once in the middle, and the third time you can open the dark grid again. ”

Before I could finish speaking, Sang Lan's father was already gasping again and again: "Who has such superb craftsmanship?" If you want me to say, the value of this box itself is much higher than this copper lock. ”

I said, "That's not the point, I'm saying this to tell you that I used to be an ordinary poor student, and now I'm an ordinary person, and I don't know much about these institutions." There are other people who really grasp the mechanism, discover the secrets of this box, and use the wishful wrench to sneak into your home. ”

This time, without waiting for Sang Lan's father to say that I was contradicting myself, Ji Yayun blurted out: "It's a little grass head fairy!" ”

I nodded, "At the beginning, Gu Shepherd took away a piece of my consciousness and refined it into a little grass head immortal, in order to find the heavenly spirit treasure for him. Although I don't know the specific process of refining, I can be sure that the little grass head fairy must have followed him to find a lot of treasures.

Perhaps it was during that period that the little grass head fairy had seen similar mechanisms, and the little grass head fairy had a keen sense of the treasure itself. Combined, it is not surprising that the secret in the box was discovered. ”

I paused, and raised my eyebrows at Ji Yayun:

"As for why the little grass fairy climbed into your bed and hugged you, do you guess it's because he lacks maternal love, or do you know that you are my unmarried daughter-in-law?"