Master Lu bowed slightly.

"It's possible to repay the urine sex of the Fulong Sect! However, I suspect there are other reasons. ”

Hearing Master Lu's words, Lin Fei's face suddenly changed slightly.

"Why did the master say this?"

Master Lu said lightly.

"Because, before I came to you, I just received a call for help from an old friend, his grandson, who was also taken captive by the Fulong Sect, and the binding things are exactly the same as the mechanical cage in front of me!"

"What?" Lin Fei was a little puzzled.

Master Lu continued, "The Fulong Sect has been secretly kidnapping young talents all these years, and I suspect that the Fulong Sect is behind it!" I'm afraid that your younger brother is outstanding and will be targeted by the Fulong Sect! You have to be good! ”

At this point, Master Lu didn't say much.

Shifting the conversation to the mechanical cage.

"Lin Fei, this mechanical cage, the old man can open it! However, there is a precondition, you must promise the old man! Otherwise, I wouldn't have shot! ”

Master Lu said to Lin Fei with a serious face.

"Master, please speak."

Master Lu continued: "The matter of me helping you open the mechanical cage must be kept strictly confidential and must not be disclosed to anyone. ”

Lin Fei comprehended.

This old man Lu was afraid of offending the Fulong Sect and setting himself on fire.

"Master, please rest assured, this is nature, I will keep this secret strictly and will not leak it out!"

With Lin Fei's permission, Master Lu began to prepare to open the mechanical cage.

I saw that Master Lu put a metal box the size of a wallet on his waist to the ground and pressed a button raised above the box.

Then, a magical scene happened.

This palm-sized metal box suddenly continued to deform and grow in size, and after a clanging sound, it actually turned into an operating table two meters long and one meter wide, covered with various mechanical tools.

In addition to the common tools like screwdrivers, screwdrivers, hammers, axes, etc.

Even large tools such as table saws, micro machine tools, laser drills, electric wrenches, etc. are readily available.

Seeing this scene, Lin Fei was stunned.

"That's pretty cool, isn't it? Master Lu, can you sell me a set of toolboxes? ”

When Lin Fei saw this toolbox, he was immediately greedy.

But I saw that Master Lu refused.

"Not for sale!"

Lu Qi on the side had a strange look on his face, and muttered.

"Lin Fei, you just give up! This set of pocket mechanical toolboxes is grandpa's heart and soul treasure, and there are no more than three people on the whole earth! Even me, grandpa, is reluctant to give, let alone you! ”

When the workbench was fully deployed, Master Lu Ban began to prepare.

"When I'm working, I don't like noise, you two stand outside and don't talk! Later, when I need help from the two of you, I'll call you! When you're not called, don't stand within two meters of me! Remember? ”

"Mmmm, grandpa, don't worry, Seven is the most well-behaved!" Lu Qi nodded.

"Remember! Master Lu, don't worry! Lin Fei also made it clear.

Immediately, Master Lu began to work.

I saw that Master Lu took out an ultra-wide-angle electron microscope from the space backpack and began to take pictures and record the runes engraved on the exterior of the entire mechanical cage.

When doing this step, Master Lu did it himself and did not use a robot assistant.

Unlike many young mechanics who like to use robot assistants and high-tech instruments, Master Luban likes to do everything himself.

After the rune is shot, the miniature brain will start to automatically draw and analyze.

During this period, Master Lu Ban was not idle, but took out some unknown black liquid and put it in the crucible to preheat.

Then, some other powders were added to the heated black liquid.

The entire underground chamber was soon filled with a foul smell.

Master Lu and Lu Qi have long been accustomed to this taste after being exposed to this taste for a long time.

But Lin Fei smelled it for the first time, so he was a little uncomfortable and a little uncomfortable.

Fortunately, Lin Fei has a super physique and strong adaptability, and this kind of physical discomfort quickly adapted.

Master Lu watched the time while paying attention to the heating of the black liquid.

At the same time, he took out the electronic manuscript paper and quickly drew something, while using a complex calculation formula that Lin Fei could not understand.

Minutes and seconds passed.

When Master Lu had already calculated, the black liquid in the crucible also became very thick, and the color turned into a brilliant purple.

The unpleasant smell also became a little faintly fragrant, like an unknown fragrance of flowers and plants.

Suddenly, Master Lu threw away the electronic pen with an excited face.

"Finally found the key! Hey, it turns out that I was right! ”

Master Lu looked excited, put on mechanical gloves, directly picked up the red-hot crucible, and then poured the purple viscous liquid in it on a special position in the mechanical cage.

Sneer......

When the metal on the surface of the mechanical cage is contaminated with that purple viscous liquid, it begins to corrode into white smoke.

The runes carved on its metal surface were instantly activated, and began to emit a faint white light.

But soon, this white light became dim.

The surface of the mechanical cage was also corroded into a large hole, revealing a complex mechanical structure from the inside.

Lin Fei naturally would not give up such a good learning opportunity, starting from Master Lu's work, and he saw the whole process through spiritual exploration.

Including the entire reaction process of the purple solution configuration, he remembered it in his mind

Although Lin Fei didn't know what the black liquid and the powder added to it were, he remembered the specific time, temperature, and amount of it clearly.

In fact, as long as the runes on the surface of the mechanical cage were corroded and destroyed, Lin Fei would find a way to open the cage and rescue Lin Jie.

It's just that, in this way, some of his secrets will also be exposed.

So, Lin Fei still patiently continued to study and observe.

At this time, Master Lu suddenly spoke.

"Seven, go get a vacuum straw and collect this corroded metal powder, remember, don't let the metal powder get on your skin! This thing is very corrosive! ”

"Uh-huh, grandpa, don't worry! I've been fighting you for seven years, and this is hard for me! ”

Lu Qi skillfully took a one-foot-long metal rod from the workbench, aimed one of the pinhole-like openings at the corroded gap above the mechanical cage, and then pressed the switch with a heart.

As the positive and empty tubes form negative pressure, the metal powder that falls off after metal corrosion on the surface of the mechanical cage begins to be sucked into the inert storage tank.

On the other side, Master Lu was not idle, and successively found the other three key nodes on the surface of the mechanical cage, and used the purple solution to corrode them.

When all four nodes corroded, the entire mechanical cage suddenly seemed to be pressed the shutdown button and fell into a dormant state, and the six mechanical tentacles were also fixed in mid-air and became stiff.