The three of them saw that Qi Ji looked thoughtful and didn't want to disturb him.

But it was quite awkward for the three of them to just stand there and watch.

"Let's look carefully and see if we can find anything useful." The blonde girl said seriously.

The fat man and the short-haired girl nodded, and the three of them began to search carefully in the carriage.

…

Not long after, the blonde girl found a very sharp knife and several bottles of unfinished mineral water on the ground not far away.

The girl with short hair found a plastic cube doll toy and took down a large newspaper with only one corner stuck to it from the window.

"There's actually a box here!" the fat man suddenly shouted.

Qi Ji was naturally attracted by the fat man's voice. He looked up and saw the fat man standing in front of him, close to the right wall.

Next to him was a black box covered with dust. The box was not big and looked like it could only hold a pair of shoes.

The blonde girl and the short-haired girl were also attracted by the box next to the fat man and walked towards him.

Qi Ji quickly came to the fat man and looked at the box in front of him. He was surprised to find that the box was locked.

"Brother Qi, what should we do? The box is locked and can't be opened!" said the fat man very distressed.

Key? Wait, didn’t the fat guy pick up a key in the first carriage? Qi Ji suddenly thought.

"Fatty, use the key you picked up before!" Qi Ji said with a little excitement.

After hearing this, the fat man's eyes lit up and he quickly took out the key from his pocket.

The fat man inserted the key into the lock and turned it. "Crack!"

The lock actually opened!

The blonde girl and the short-haired girl couldn't help but look excited at this moment. They never thought that the key to the first carriage could actually open this box.

"Brother Qi, you are amazing. I was planning to throw away this key!" Niu Wu said excitedly.

"Fatty, now is not the time to get excited. Let's take a look at what's inside first." Qi Ji glanced at the fat man and said.

"Oh." The fat man scratched his head and said a little embarrassedly.

At this moment, everyone focused their eyes on the inside of the box. When they saw what was inside the box, the four of them couldn't help but be surprised.

Because the box is filled with many bean-sized transparent particles, these particles occupy about one-third of the volume of the box.

"Are these white particles crystals?" the short-haired girl asked puzzledly.

The fat man looked at these particles with his head full of question marks. Obviously he didn't recognize these particles, but he was sure that they were not crystals.

At this time, the blonde girl said hesitantly: "If I'm not mistaken, this should be ice crystal stone."

"Ice crystal stone, I've heard of it. Putting it in water seems to make the water freeze quickly!" replied the short-haired girl.

"But why do we have to freeze the water? Can we pass the level directly if we freeze the water?" said the fat man.

The three of them now all turned their eyes to Qi Ji.

Qi Ji sighed helplessly: "Looks like I have to take action again."

After hearing this, the three of them were a little speechless, but they did not refute anything.

Because Qi Ji's strength is there, in the eyes of the three people, Qi Ji is a man who can create miracles.

"Next you just do as I say!"

The three of them nodded at the same time, looking like primary school students listening to a lecture, which was a little awkward.

Qi Ji glanced at the items collected by the three people, thought about it for a moment, and he knew what to do next.

Qi Ji smiled and said, "First, pour all the ice crystals onto the newspaper."

After hearing this, the three of them immediately took action.

The short-haired girl spread the paper on the ground, while the fat man and the blonde girl carefully poured all the ice crystals in the box onto the newspaper without dropping a single one.

Qi Ji nodded with satisfaction.

"Next, put the newspaper and the ice crystals back into the box. Make sure the newspaper is in direct contact with the bottom of the box, and the rest of the paper is in contact with the wall. Use a knife to cut off the excess paper and keep it as neat as possible."

The three of them acted quickly and completed this step quickly.

"Well, next you will pour the collected mineral water into the box until it is almost full."

Next, the blonde girl, the fat guy, and the short-haired girl poured all the mineral water they had collected into the box.

The amount of mineral water was just enough to fill the bottle, which surprised all three of them.

At this time, Qi Ji came to a depression not far away where some machinery was running.

The machine is also moving at this moment, but due to the lack of a gear part, the overall movement of the mechanism is not complete.

Qi Ji looked at it carefully, then moved closer and gestured a few times, as if simulating something.

Not long after, Qi Ji returned to the fat man and his two companions.

At this moment, the cryostat in the box has reacted with the water to form a rectangular block of ice.

"Pour out this ice cube, and be careful."

After hearing Qi Ji's words, the fat man immediately took action and carefully poured out the ice cube with both hands.

Qi Ji tore off the newspaper with his right hand and touched the ice cube.

The ice was unexpectedly hard and cold, but it made him feel relieved.

"Give me the knife in your hand!" Qi Ji said to the blonde girl.

After hearing this, the blonde girl handed the knife she had picked up earlier to Qi Ji without hesitation.

The blonde girl didn't know why, but she felt that Qi Ji's words revealed infinite magic, and she found it difficult to say no.

After taking the knife, Qi Ji began to draw a pattern on the ice.

At first, the fat man and the two girls didn't know what the pattern was, but they soon found out.

This pattern is actually a gear!

…

Qi Ji repeatedly rubbed the same position with a knife. The knife was very sharp.

So the cutting speed was very fast. In less than a minute, Qi Ji cut off a gear.

If it were in the past, Qi Ji would never have been able to complete such a precise operation in such a short time.

But now he is already a warrior, and more importantly, he also possesses the talent of mental power - Nine Revolutions of Divine Mind.

Although the strength of the warriors in this mode is restricted, the upper limit of their mental strength is not restricted.

Qi Ji held the cut gear and quickly walked to the side of the recessed mechanism. He slowly aligned the center hole of the gear onto a stationary circular shaft.

"Once the carriage door opens, you must go in immediately!" Qi Ji said solemnly.

The fat man and the two girls nodded heavily. The three of them looked shocked. Qi Ji's operation was really amazing.

Qi Ji stared at the two gears that were constantly rotating below. One gear was rotating, but not very fast, while the other gear was stationary.

Finding the right moment, Qi Ji immediately placed his gear along the circular axis.

This ice gear meshed well with the other two gears. As the ice gear turned, the previously prohibited gears began to rotate one after another.

“Buzz~~”

Suddenly, the door of the carriage in front of the four people was slowly opened.

Qi Ji reacted very quickly and entered the back door of the carriage first. The fat man and the two girls also reacted quickly and followed him into the back door.