The production principles of energy blocks are actually the same, except that the more advanced the energy block, the greater the energy it contains, the greater the number of unstable points, the more complex the calculation formula, and the higher the mental requirements for the maker.

Energy shields below level eight can already be manufactured using technology, and the calculation of unstable points can also be done through optical computers, so the production of energy blocks below level eight can be completely automated by machines. However, during the production process, the loss of energy blocks will be much greater than that of skilled manual labor, and it is difficult to reduce this.

On the first day of college, Yan Hao learned the calculation formula for level four to six energy blocks. This formula was not complicated for him, or rather, it was rather simple.

In his previous life, in order to prepare a special potion, he had to calculate different ratios among thousands of potions. There were so many types of potions that it was almost impossible to count them. If he really had to try them one by one, he probably couldn't finish them in his lifetime. Therefore, most pharmacists would rely on their own control of the properties of the medicine to try to make the potion. This is the so-called talent of a pharmacist. Yan Fei was very talented in this area, so he often innovated potions, but Yan Hao had no talent in this area, so he thought of a very simple and crude method.

That is to accurately measure the composition of each herb and the possible changes in various proportions, and then calculate it through a large number of complex mathematical formulas. This formula is much more complicated than the calculation formula of the energy block. At least when he prepared the potion, he couldn't calculate it mentally.

With this foundation, Yan Hao made the first level 4 energy block in just thirty minutes.

Then came the second, third, fourth, and fifth. He completed the production of all the raw materials that Sheng Heng bought for him, and finally compressed the time into twenty-five minutes.

"If it weren't too late now, I would really like to take these energy blocks of yours to the laboratory to test their effectiveness." Perhaps because he had been stimulated too much that night, He Shao was now able to calmly stare at the freshly-made fourth-level energy blocks in front of him.

"Let's go early tomorrow morning." Yan Hao also wanted to know the efficiency of the energy blocks he made.

"How effective do you think the energy blocks you made are?" He Shao asked curiously.

"About 60 percent." Yan Hao said.

If the efficiency of the energy block he made exceeds 60%, it means that there is no problem in the production of his energy block.

"Only 60%?" Having witnessed someone's amazing act the whole night, He Shao was more confident than the person himself. "Based on your production level, it should be at least 70%, or even higher."

"Thank you, but you are too optimistic." Yan Hao laughed, "I am just better at computing, but no matter how strong I am, I can't compare to an optical computer. The efficiency depends on how the mental power organizes the energy."

Yan Hao was very self-aware. Just like in the past, the more advanced the potion, the more perfect the proportion he configured, but the efficacy was always inferior to Yan Fei and could only be considered above average.

Therefore, in this life, Yan Hao only set the ratio of his energy block at 60%.

"Hey, why are you so boring? This energy block hasn't been tested yet. What we are discussing now is the possibility. Just like after the exam just now, everyone estimated the score and subconsciously overestimated it a few points. This is a kind of good wish." He Shao couldn't help but say.

"But...what if I fail the exam? Wouldn't that be embarrassing?" Yan Hao frowned.

"Why are you embarrassed? We were just joking. Who would take it so seriously? You must be crazy." He Shao picked up the level 3 energy block he had just made and said, "I think the efficiency of my energy block is 80%. If I test it later and see if it's effective, will you laugh at me?"

Yan Hao shook his head.

"So, bragging occasionally between friends is a way to enhance friendship."

"Then..." Yan Hao learned it. He pointed at the level 4 energy block he made and said, "I think the energy blocks I made can be 90% effective."

"Oh, that's right." He Shao smiled and gave Yan Hao a thumbs up.

Yan Hao smiled back, and his uneasy heart unconsciously calmed down. He suddenly felt that even if the energy block was tested tomorrow and the efficiency was less than 50%, it didn't matter. Because no one here would laugh at him relentlessly because of his mistakes or poor performance.

He was enveloped in an unprecedented sense of ease, like a fish released back into the sea, swinging its tail freely.

The next morning, after breakfast, Yan Hao and He Shao took their equipment to the laboratory to test its effectiveness.

The Mecha Department and the Mecha Manufacturing Department are very close to each other, and because the two departments are closely connected, the laboratories, maintenance rooms, and mecha training rooms they built are all in the same place.

Yan Hao had just walked to the door of the Mecha Manufacturing Department laboratory when he met Sheng Heng who was coming from another road. Sheng Heng was holding breakfast in his hand, and it looked like he was bringing it to someone.

"Senior." Yan Hao greeted politely.

"Junior brother." Sheng Heng smiled slightly, "Come to the lab so early?"

"Um."

"Have you had breakfast?" Sheng Heng shook the breakfast in his hand, as if he would feed Yan Hao if he shook his head. He didn't know why, but as soon as he saw Yan Hao, he wanted to feed him something. He always felt that this junior was too well-behaved.

"have eaten."

There was a flash of disappointment in Sheng Heng's eyes. When he was about to say goodbye to the two and walk towards the training room, he heard He Shao beside him suddenly scream.

"What's wrong?" Yan Hao looked at his roommate strangely.

"We don't have to go to the laboratory." He Shao said excitedly, "It costs fifty star coins to go to the laboratory for testing."

He remembered that Yan Hao didn't even have money to buy materials.

"So expensive?" Yan Hao was really shocked. A level 4 energy block was priced at eight hundred star coins, and a performance test cost fifty star coins. This was too much.

"It's not that expensive. It costs fifty star coins to test a level four energy block, and fifty star coins to test a level eight energy block. Once you learn how to make advanced energy blocks, you won't think it's expensive anymore." He Shao said.

"Then... let's test one piece." Yan Hao said with pain.

Sheng Heng listened to the conversation quietly. He understood something and asked, "Are you... going to test the efficiency of the energy block?"

"Yeah." Yan Hao nodded.

"Let's ask the senior to help with the test. Each mecha can automatically detect the efficiency of the energy block." He Shao said immediately, "You are going to sell these energy blocks to the senior anyway, so it's a good opportunity to let the senior take them for testing. This will save more than 200 star coins."

After hearing this, Yan Hao's eyes lit up and he looked at Sheng Heng with burning eyes.

Yan Hao was not short of money in his previous life, but in this life he had to make a mecha, and there were too many expenses. He didn't want to ask his parents for money, so he could only save more.

Sheng Heng smiled: "You made a level 4 energy block so quickly?"

From the last time Yan Hao helped him replace the axle of the mecha, he could tell that Yan Hao had a solid knowledge of mechas, so he was not surprised that he could learn how to make a fourth-level energy block.

"I learned how to do it yesterday. Can you help me test it? If the performance is not up to standard, I don't charge you." Yan Hao said.

"Let's go." Sheng Heng didn't say much and turned to walk towards the training room.

Yan Hao happily pulled He Shao and quickly followed.