The gas refining method has strict experimental steps on the drawing. He has not yet learned the [Basic Biochemistry] of the energy branch. He doesn't know the principles, so he just follows them.

Ammunition can be made into various calibers, from pistol bullets to sniper bullets, and is easy to make, very practical, and has a wider market. These days, he has found time to make dozens of high-flammability bullets.

By the way, Han Xiao used better steel to create a folding combat knife, 5.3 pounds, 0.65 meters, the handle is 0.12 meters after folding, the close attack power is 13~19, the whole body is black and shiny, and the blade is divided into folding lines.

, the tip of the knife is at a right angle, just like a gongbi knife. This kind of melee weapon for beginners has little effect on him. Making it is better than nothing.

He used his experience in making high-inflammation bullets and folding swords to upgrade [Basic Mechanical Affinity] to level four.

[Elementary Mechanical Affinity] has a full level of five, which is still 15,000 experience points away. [Basic Shooting] is currently at level 8. It takes 45,000 experience points to reach the full level. As long as you spend another 60,000 experience points, you can get it again.

Gain two potential points.

Each country holds different advanced knowledge. As a secret, one of its uses is to attract powerful lone superpowers. Aquamarine only has professional knowledge for three main professions, the supernatural system and the martial arts system.

Department of Mechanical Engineering.

No novice planet has complete knowledge of the five main professions. The player's career preference questionnaire at the beginning determines which type of novice planet the system will assign them to.

For example, on a novice planet with an ancient background, if you want to build a machine, is it possible?

Hey, don’t tell me, it’s really possible.

But, you have to manually strike, forge, and smelt. Without lathes or equipment, you have to make everything by hand. Moreover, many things cannot be made, and the raw materials are not perfect, so the efficiency is appallingly low.

The advanced knowledge mastered by the Thirteenth Bureau happens to include the advanced knowledge of the armed branch of the mechanical system. It is only open to high-authority personnel. At least you must have a [respected] relationship to browse it, which takes too long.

Han Xiao secretly thought that if he wanted to obtain advanced knowledge in a short period of time, he must take advantage of the opportunity and take the wrong path. His advanced mission would fall on the thirteenth round.

There is no chance now, I can only wait.

Han Xiao did not forget the order from the repair shop. It was not considered work at all for him, it was very relaxing.

Lu Qian avoided him everywhere these days, not daring to look at Han Xiao. She blushed and ran away without saying a few words, leaving Han Xiao helpless.

It's all Old Man Lu's fault!

This old bald man is still laughing next to me. If you have the guts, come over and I'll show you a big treasure.

Lu Qian has very complicated feelings about Han Xiao. She asked herself more than once, do I hate Han Xiao? The answer is no.

But do I like Han Xiao? It is also negative. It is definitely not a love between men and women. The accurate description should be "appreciation".

But if she clearly rejects Han Xiao, will Han Xiao quit in anger? Lu Qian is reluctant to let go of such a good (cheap) assistant.

So Lu Qian has been very entangled, avoiding Han Xiao, worried that Han Xiao would ask her to answer directly, and flipping a coin in her mind: What should I do if he confesses his love?

Regardless of Lu Qian's self-concern, Han Xiao's cell phone rang.

Feng Jun sent a message, "Your certificate has been approved. Report today."

"Finally here."

Han Xiao's eyes flashed.
Chapter completed!