"This is our secret weapon to defeat the Universe Team!" Klopp said, pointing to the mysterious square building behind him.

When everyone's eyes became even more confused when they heard the head coach say this.

How could the secret weapon to defeat Barcelona be in this seemingly ordinary house?

This is a house without windows. You can't imagine what other houses can be used to make a warehouse.

The answer will be revealed later.

When Klopp led the players into this "big" black room, the first thing that caught his eye was a huge iron cage.

In the iron cage is an artificial turf, and there is a circle drawn by white lines in the artificial turf, just like the middle circle of the court.

There are a lot of lights above the roof that shoot into the cage, so although it is in a dark room without windows, it is as bright as daytime.

There are two square holes in the middle part around the iron cage, both on the upper and lower sides, and there are eight holes on all four walls.

All of this looks confusing and strange.

Everyone looked at what they saw with curious eyes, not quite understanding what it was.

Zhou Yi thought of an advertisement Nike once filmed, the iron cage scorpion fight, so he asked: "Coach, do you want us to be one-on-one inside? Those who lose will be thrown into the sewer and rushed into the Rhine..."

The teammates burst into laughter.

"I really want to do this, boy." Klopp also smiled.

After joking, he clapped his hands, pointed at the iron cage and introduced to everyone here: "Welcome to 'Footbonaut'!"

When everyone heard this name, they were still confused: "What's that?"

"As you can see, in front of you is a square area that is fourteen meters long and fourteen meters wide. The walls in this area are composed of seventy-two special wall panels. Have you seen this?" Klopp asked pointing to the white hole.

Everyone nodded one after another.

Klopp asked again: "Is anyone good at playing table tennis?"

Some people in the team raised their hands, and Zhou Yi was the highest. As a player from China, you must have confidence in this regard.

When Klopp saw him, he asked him: "Zhou Yi, have you ever been exposed to the table tennis serving machine?"

Zhou Yi shook his head: "No, but I have seen it. It's just a machine that keeps shooting out table tennis, and then the table tennis player catches the ball on the opposite side..."

"It's very well explained." Klopp nodded. "And this." He pointed to the white hole and said, "It's our serving machine!"

After hearing this, Zhou Yi was able to guess what this mysterious and strange thing was for...

Klopp continued to explain to the players: "You need to catch the balls from these serving machines in this white circle, stop the football, and then kick the football to the random grid. It sounds very simple, right?"

Zhou Yi nodded habitually, and then Klopp was targeted: "Hey, Zhou Yi."

"Ah?" Zhou Yi didn't expect that he would be named, and he was a little confused.

"Come on, come and give everyone a demonstration!"

"Oh!" The teammates next to him whistled excitedly, and they wanted to see Zhou Yi make a fool of themselves. Obviously, when Klopp asked "very simple", the answer he wanted was definitely not "yes". Zhou Yi was like hitting Klopp's gun himself.

Zhou Yi was driven into the iron cage, and after entering the cage, the door was closed.

"Go to the middle circle." Klopp said outside pointing to the white circle.

Zhou Yi walked in obediently and began to look around. His head kept swaying from side to side, imprinting everything he saw in his mind. This is his habit. In a strange place, he would constantly observe and scan, and then record every detail of the environment on the record.

"Are you okay?" Klopp asked outside.

Zhou Yi gave Klopp a thumbs up.

The teammates outside stood with a smile, waiting to watch the showdown between Zhou Yi and the machine.

"Okay, countdown three seconds." Klopp finished.

The seventy-two grids in the cage suddenly lit up red lights at the same time, which scared many people.

Next, one second later, the red light turns yellow, and another second later, the yellow light turns green.

After the green light goes out, two prompts sound similar to when the car locks the door.

Zhou Yi heard the sound from behind him, so he turned his head and looked back, and saw a football suddenly popping out of a serving machine with red light!

Zhou Yi quickly turned around, but in the end, the football hit his support!

He staggered and fell to the ground!

There was a burst of laughter among the teammates.

"Get up!" Only Klopp was shouting at Zhou Yi. "Get up!"

As soon as he finished speaking, two more prompts sounded.

As soon as Zhou Yi looked up, he saw a football shot out of another serving machine and flew towards him. He reflexively blocked his face with his hands, and the football hit his arm and spread it out.

Seeing Zhou Yi in such a mess, the teammates outside laughed so hard that they fell back and forth.

However, Zhou Yi also realized that the machine did not seem to be suspended because of his fall, so he jumped up from the ground this time. He already knew how the machine worked.

Two prompt sounds are to remind players that the football should be fired from the hole in the direction where the prompt sound is issued. It will be about one second earlier than the pass, so that the player can turn in advance and be prepared.

So this time when the prompt sounded again, Zhou Yi immediately determined that the football would be coming from his right, so he quickly turned around and headed towards the other side.

Sure enough, the red light on the outside of the serving machine below the right side lit up and a football was fired out.

Zhou Yi raised his leg and stopped the ball. He was obediently stopped the football at his feet. He looked up again and found that a green light was on the grid on the left wall.

Zhou Yi quickly passed the football over, and the football accurately hit the grid, flipped the grid up, and rolled it out.

The grid will then automatically flip back.

Then two more prompt sounds sounded. This time, he came from behind Zhou Yi. He turned around, the football flew over, raised his leg and stopped the ball. After stopping, he looked up and observed. A light was on the grid facing him. Zhou Yi kicked the football over, and the football hit it accurately again.

The third time, after Zhou Yi passed the ball, the football hit the grid and bounced back, and the green light turned into a yellow light.

Zhou Yi ran out of the circle and kicked the football back to the grid again. When the yellow light turned into a red light, the football finally successfully hit the right goal.

In this way, every time a prompt sound is heard, Zhou Yi will quickly turn around and complete the ball catch, and then repeat the ball and pass the ball.

During this process, he found that the target grid had a very fast speed from a green light to a yellow light and then to a red light. It would take only two seconds to turn on the three lights. He had to kick the football towards the target in such a short time.

After the kick was completed, the pass prompt sound would sound immediately. Zhou Yi would hardly have any chance to breathe and rest. He had to repeat this set of movements continuously, and he could not stop at all, nor could he stop.

However, this fast-paced training made Zhou Yi feel addicted in the process... He no longer cared about other things and focused on finding targets, catching the ball, and passing the ball.

The teammates outside the cage gradually stopped laughing, and their expressions became more and more serious, because they also discovered that this thing was not a fun toy. The content and training intensity displayed in Zhouyi's demonstration made many of them have to take the strange iron cage in front of them seriously...

They are all professionals and they know very well what this series of quick passes means.

Just when Zhou Yi had already entered the state of selflessness, two prompt sounds did not sound again.

Zhou Yi turned around and searched everywhere, and the eight white serving machines never lit up again.

"Huh?" He hadn't figured out what was going on.

Klopp opened the door and walked in: "It's over."

"It's over?" Zhou Yi had an incredible expression on his face. He was not satisfied yet.

"Well, one and a half points for a single training session," Klopp explained.

"Ah, can I do it again? Coach?" Zhou Yi begged.

"Do you think this is exclusive to you? They are still waiting!" Klopp pointed to the players outside the cage.

Zhou Yi looked over and found that his teammates were all looking excited and eager as he did. It seemed that everyone was deeply attracted by this novel thing!

Of course he could not dominate the training facility, so he had to leave the cage with regret and unsatisfactory mood and gave the position to other teammates.

Seeing his teammates excitedly and clumsyly adapting to this brand new training facility in the cage, Zhou Yi was itchy and his feet were itchy.

He couldn't help but think, it would be great if he could have a training facility that belongs only to him...

On this day, all Dortmund's team, except for the goalkeeper, conducted a total of ten minutes of "Footbonaut" training.

The same is true for Zhou Yi, but when he finished training, he still bid farewell to this "big" black room with a reluctant mood.

When he followed his teammates out, Zhou Yi looked back at the white exterior wall and a building without a window.
Chapter completed!