Taking into account that the previous enemies were all strength-based, speed naturally had to be trained.

Klein knew very well that the advantage of Little Fox was its speed.

Furthermore, it wasn't born to walk the strength type.

Therefore, the direction had to be determined.

Little Fox only needed to train its speed to the extreme.

Before Klein came to this catacombs world, he was also a loyal fan of video games.

He had played many video games, and Klein had his own set of experiences with video games.

That was, speed was always the most sought-after.

Any powerful opponent would reveal a flaw in front of speed.

"Little Fox, what you need is faster speed. The current you hasn't broken through your limits," Klein said to Little Fox.

Little Fox nodded after hearing that. She knew very well that her speed could be faster.

Other than eating something that could improve her strength, the rest needed to be improved through a certain amount of training.

Therefore, Little Fox nodded and immediately walked out.

She was already prepared for training.

Klein said to Little Fox, "Now, use this catacombs as a circle and run back and forth. I'll help you remember your time and see if you can make a breakthrough."

It was just like what the P.E. teacher had told them in high school.

If one wanted to train their speed, all they had to do was run. They had to constantly push their limits.

Only by doing so could they improve.

Everything else was illusory.

After Little Fox heard this, she immediately began running.

Her speed was extremely fast. Klein could only see streaks of white light darting back and forth in the catacombs.

At the same time, Klein turned to look at Little Wind.

"Even if you train in hardness, your hard armor can be even harder."

Little Wind nodded after hearing this.

To Little Wind, it was very difficult to increase his speed.

At the very least, it was absolutely impossible for him to reach Little Fox's level.

After all, he was carrying a layer of heavy hard armor on his back.

However, his advantage lay in his indestructible hard armor.

This was his strongest shield.

If he could nurture Little Wind well, he could completely become an indestructible strongest shield.

Therefore, Klein planned to develop Little Wind in this direction.

Klein pointed at a stone in front of him and said, "Try to shatter the stone in front of you as fast as you can."

Little Wind nodded and began to ram his entire body into the stone.

Bang!

There was a huge tremor.

A huge crack instantly appeared on the stone.

Then, with another collision, the stone instantly cracked.

With another collision, the stone instantly turned to dust.

'Three strikes to completely shatter a stone. From the looks of it, Little Wind still needed to improve a lot,' Klein analyzed in his heart as he watched Little Wind's performance.

Soon, Klein asked Little Wind to choose another stone.

This time, the stone he chose was much weaker than the previous one.

Klein had his own system for teaching.

Previously, Klein had raised a dog.

Klein had raised this dog from a puppy that knew nothing to a well-trained dog.

Therefore, for Klein, he only needed to use the same method to raise Little Wind.

Although there would be differences in methods.

After all, one was an ordinary dog and the other was an armored beast.

However, he could use the previous method to summarize a similar theoretical system.

Klein was very clear about this.

Therefore, he only needed to summarize it based on these.

Then, he would make an analogy.

Klein was very clear about this.

This was undoubtedly the most effective method.

As expected, the stone he chose this time was able to completely shatter it with a single strike.

Little Wind himself had become much more confident.

Klein nodded and said, "Very good. Let's do it slowly. Let the hardness of the stone will increase. That way, the hardness of your hard armor will increase as well."

Little Wind nodded. At that moment, he was completely filled with fighting spirit.

He had to work hard to improve himself and help his master.

Only then would it not be in vain for what his master was doing for him.

And over here, after half an hour of training...

Little Fox's stamina had clearly decreased by quite a bit.

Her speed gradually slowed down.

Klein made Little Fox stop and said to it, "Stamina is also a very important part that you need to improve."

One had to know that the enemies in the future would become more and more troublesome. At that time, they would definitely fight a protracted battle.

Therefore, it was equally important to increase Little Fox's stamina.

Klein said to Little Fox, "Rest for ten minutes, then continue training and force yourself to break through your limits. Only by doing so can you improve."

Klein added, "If you can break through your limits, you can have barbecued meat for dinner."

The moment he said that, Little Fox and Little Wind's tired eyes instantly flashed with enthusiasm.

They became very energetic again.

Continue to work hard, and strive to eat barbecue early!