In the evening.

A medium-sized cargo hovercraft drove into the cave.

Lin Tao was somewhat surprised by Zheng Cheng's ability to get things done.

The car was filled with barrels of special raw materials, and there was a large iron box on the other side of the car.

After the big iron box was unloaded, Lin Tao opened it and found that it contained various small instruments needed to mix the materials.

Lin Tao looked up in surprise and glanced at Zheng Cheng with a strange expression. This guy seemed to have guessed that Lin Tao would mix the invisible paint by himself and had prepared everything in detail.

Zheng Cheng smiled slightly, nodded, and said nothing.

Lin Tao's eyes flickered slightly. He had been planning to ask the people from the Blood Wolf Gang whether they had handled the matter properly. But now, there was no need to ask. Lin Tao already knew the answer.

Zheng Cheng was a warrior, and Lin Tao himself had been genetically enhanced with drugs, so he was quite strong. The two of them quickly unloaded the raw materials bucket by bucket.

After unloading.

Zheng Cheng seemed to have some concerns and walked away.

Lin Tao stopped him and said, "Zheng Cheng, just watch from the side."

"Brother Lin, this..." Zheng Chengwei frowned.

Lin Tao smiled. He felt that Zheng Cheng in front of him was a talented person who was good at doing things. Although he was Zheng Tuo's man, he was still a member of the Zheng family, so he wanted to cultivate him.

After all, without Instructor Zheng in later generations, Lin Tao would not have had the status he had at that time.

"Do you know how to mix materials?" Lin Tao asked with a smile.

"This thing is too troublesome." Zheng Chenglian shook his head. After a pause, he sneered and said, "Brother Lin, usually this kind of thing can be bought with money. I usually just use money to solve it."

Lin Tao smiled: "What if money can't solve the problem?"

The stealth paint that Lin Tao is preparing now cannot be bought with money, because it is an advanced paint that will only appear in the future. It is even more advanced than the three stealth materials 173, 174, and 176 that are still in the research and development stage.

Zheng Cheng didn't even think twice: "Then take it back."

"Haha~" Lin Tao laughed, but since Zheng Cheng was not interested in mixing the raw materials, he did not force him: "Can you operate a mecha?"

Zheng Cheng nodded: "We are warriors, people who practice martial arts, and we are physically strong, so our families will arrange for us to go to the Mecha Academy and study in the Mecha Master Department at the same time."

Lin Tao's eyes lit up.

However, what Zheng Cheng said was not wrong. The stronger the body, the more helpful it would be to the mecha pilot who entered the body, because only a strong body could adapt to some special body movements. Even if the cockpit had enhanced protection mechanisms, the powerful buffering force generated at instantaneous high speed was not something that ordinary people could withstand.

This is also the reason why the Superman Project came into being, and it is also the reason why enhanced genetic drugs became popular in later generations.

While preparing the medicine, Lin Tao asked casually, "Can you tell me how many people the Zheng family has on Mingyuan Star now?"

Lin Tao originally wanted to recruit all the members of the Zheng family, but when he said this, Zheng Cheng's face suddenly darkened. He closed his mouth tightly and said nothing.

Lin Tao was stunned, then shook his head secretly, realizing that his question was abrupt. The Eight Great Ancient Martial Arts Families were nominated by the Interstellar Federation in later generations. In this era, there was no such thing. According to Lin Tao's thinking, the Zheng family should still be developing in secret at this time.

Although Lin Tao has established a connection with the Zheng family because of his finger technique, this does not mean that everyone in the Zheng family can accept his existence.

Lin Tao changed his words again. He looked up at the huge red tiger mecha and smiled, "Zheng Cheng, do you know how to operate this mecha?"

"The Crimson Giant Tiger is a custom-made model. Its performance is slightly stronger than that of ordinary tiger-shaped mechas. Skynet does not have this type of machine. However, I will be able to fully master its operation within an hour or two at most." Zheng Cheng only took a glance at the Crimson Giant Tiger and nodded.

"Then you should first familiarize yourself with the operation of this aircraft." Lin Tao gestured.

"I..." Zheng Cheng's eyes showed surprise, but he soon thought of something. He didn't say much, nor did he act pretentiously. He turned around and pounced on the giant red tiger.

The cockpit of the red giant tiger was three or four meters above the ground, but when Zheng Cheng came to the auxiliary ladder, he just jumped up more than two meters. He stretched out his right foot, pushed on the auxiliary ladder, and immediately floated into the cockpit.

With just one move, Lin Tao was able to see Zheng Cheng's strength. He frowned slightly. The strength of warriors in later generations could be measured by numbers.

A normal human's physical body punch usually does not exceed 50 kilograms. Even with explosive power, it is only about 100-150 kilograms. Those who punch over 200 kilograms are mostly trained warriors.

In later generations, an ordinary human who took the No. 1 enhanced gene drug could easily reach this level with a single punch without any explosive power.

Therefore, the data in later generations are generally based on pure physical strength. If the pure physical strength reaches 100 kilograms, it is considered one unit.

Zheng Cheng in front of him seemed not to have reached 1 unit yet.

Such physical strength, in the eyes of ordinary people, is considered to be that of a martial artist, but in the eyes of genetic warriors, it is nothing.

Just like Lin Tao's current body, although he used impure potions, because it was gene potion No. 7, it could barely be considered 1.5 units. This kind of physical strength, although still far from the powerful period of later generations, could also perform many difficult body movements.

With Lin Tao's sharp eyesight, Zheng Cheng at the moment can only withstand rapid turns at a certain speed at most, as if the performance of the aircraft is too superior and cannot be controlled.

"It seems that just manufacturing a simple chip is still not enough." While pondering, Lin Tao glanced at Bai Fan who was in crazy contemplation.

With the tools and some strength, the process of making invisible paint is not long.

In less than two hours, Lin Tao had already produced the invisible paint, which was as black as ink.

This paint was later called 180 stealth paint. It is a new material developed by the Interstellar Federation based on paint No. 175.

As long as this stealth paint is applied all over the Crimson Tiger, no radar will be able to detect it unless it is seen at close range with the naked eye.

During these two hours, except for Bai Fan who had been thinking with his head down, Zheng Cheng had also already figured out the operation of the red giant tiger.

Zheng Cheng seemed to want to show off on the red giant tiger. After getting familiar with it, he performed a few bionic machine movements of this era on the spot. However, in Lin Tao's eyes, these movements were just ordinary operations and were not pleasing to the eye.

After the paint was made, Lin Tao called Bai Fan, and the three of them painted the giant red tiger together.

Time flies like a white horse passing by, and in the blink of an eye, two days have passed.

Mingyuan City, Aunt Bai’s building.

In the morning.

The Du siblings were still asleep when they were awakened by a series of hurried knocks on the door.

"Who is it?" Du Ruiming rubbed his sleepy eyes.

"It's me. I'm Aunt Bai."

From the other side of the door came Aunt Bai's panicked voice.

Teng! Even Du Ruizhi, who was lying on the bed, ran out at once, not even bothering to wash up, and hurriedly opened the door: "Aunt Bai, why are you here?"

"Xiaozhi, my Bai Fan hasn't been home for two days. I don't know what happened?" Aunt Bai's eyes were red and swollen, and she was obviously very anxious: "Didn't he go to school with you guys?"

Du Ruizhi was stunned, and Du Ruiming's expression also changed slightly.

Fortunately, Du Ruizhi reacted quickly. She consoled him: "Aunt Bai, your Bai Fan has stayed in the academy for the past two days."

"But...but why have I been calling him but received no response?" Aunt Bai's eyes turned red, and she almost burst into tears: "This child was not like this before."

"Okay, okay, Lin Tao is with him." Du Ruizhi smiled, "Have you forgotten that Lin Tao is now the number one in the entire First Mecha Academy? The entire academy has set up a special class for him. With him, do you still need to worry about Bai Fan?"

"Lin Tao is the best in the academy, recognized by the dean himself. Bai Fan will probably learn more from him than we do." Du Ruiming also said quickly: "Moreover, when conducting large-scale experiments in the academy, it is generally forbidden to contact the outside world to avoid leaking the news."

"Really?" Aunt Bai's eyes were red, but the worry in her eyes had subsided. It seemed that compared to Bai Fan, she trusted Lin Tao more, and also trusted Du Ruizhi in front of her more.

"That's right. The academy's large-scale experiments are all afraid of leaks, so participants are generally prohibited from contacting the outside world." Du Ruizhi said.

"Well, when you get to the academy, tell this kid to come back as soon as he's free." Aunt Bai gave some instructions before leaving. As she left, she kept muttering, "This kid, next time something like this happens, make sure he tells his family first."

As soon as Aunt Bai left, the Du siblings looked at each other in bewilderment.

"Sister, Lin Tao hasn't come back for two days. Could something have really happened to him?" Du Ruiming asked cautiously.

"Sigh~" Du Ruizhi sighed softly. Not to mention Aunt Bai was looking for Bai Fan, even Director Tong from the current Engine Design Department had approached her more than once, wanting to find Lin Tao's whereabouts.

She originally thought that the two guys had disappeared, but they hadn't shown up for two days and she didn't know what had happened.

"Forget it, let's go back to the college immediately and tell Director Tong the news first to see if they can find a solution?" Du Ruizhi had no choice but to do so.

The two of them simply washed up, didn't even have breakfast, and went straight back to the college.

Engine Design Department, Tutor's Office.

It was the first time that Director Tong Zhihe returned to the tutor's office so early. Under normal circumstances, he would not be back until at least nine o'clock.

"What's going on with this guy? He hasn't shown up for two days?" Director Tong paced back and forth in the tutor's office, his beard shaking with anxiety.

Not only him, but many instructors also arrived early and sat waiting.

Ever since Lin Tao provided the design drawings of the X-33 engine in the test bank, almost all the instructors have been trying their best to manufacture the engine according to the drawings.

But as soon as they started working, everyone realized that the actual object was very different from the drawing.

They couldn't even build this engine based on the blueprints alone!