Above the new pass, Rock looked at the battle in front of the pass, his expression slightly gloomy.

"These races have such weak combat power. Could it be civilians?" he asked.

It's no wonder that he has this idea. Except for some guys with mounts, they are more powerful and have a combat power comparable to knights. Other mixed alien races have probably only the strength of the apprentice knights, or even the apprentice knights.

This is today's enemy, some new races and aliens, who were stopped by their apprentices before they even reached the gates.

"In fact, there have been some other battles in the past. It cannot be said that civilians are just aliens with extremely low bloodline levels.

Don't forget that, by name, they are the invaders, and everything we do is to guard the plane fronts and guard the civilians of the Wizard plane."

Seeing that his expression was strange, Grace sneered.

Uh----Yes, the Nine Ring Plane actively invaded the Wizard Plane, and three battlefields were opened in succession in the Wizard Plane, and this is the last one to be opened.

"Yes, when you step into the plane battlefield, no one is innocent, you just stand in a different angle." Rock nodded. He was just a thought from his previous life, which made him feel a little uncomfortable.

"But, this kind of alien race with low strength and weak fighting will make people unable to get the interest of killing," he continued to sigh.

Many apprentices, including Rock, know that wizards have long studied it. Deep in the blood of the Nine Rings, there is a deep-rooted influence, affecting the will of the aliens, and driving them into the plane battlefield, like some instinct.

The higher the bloodline level, the deeper the influence of will. It is reflected in some aspects, such as if they are not afraid of death on the battlefield, and for example, they will find reasons that fit themselves and force themselves to step into the battlefield.

Under the influence of bloodlines, alien races will never be able to detect this.

"Sir, Boole's materials have been shipped to Guanzhe. You see, if you have time now, should you teach me how to make poison gas bombs?" Grace urged to change the topic.

Several captains were not involved in the killing and were surrounded by Captain Rock to patrol the gates. When they heard Grace's words, they all pricked up their ears.

"Didn't you check it out yourself?" Rock asked back.

"I didn't have time in the battle before, but then I thought that you would teach you sooner or later, so why should I risk breaking the contract and use my mental power to explore such a terrifying thing."

Grace answered his words honestly, and the others nodded in agreement, expressing their consent, and at the same time showing that they were innocent.

Only if you believe you will have ghosts!

However, he had already taken out the poison gas bomb, so it was impossible to keep it secret. Although he had mixed some concealment during the production process, the principle was actually very simple, and the engraved runes were also very simple.

He wanted to gain more benefits in the plane battlefield, so he could only teach some people how to make production, make more poison gas bombs, and put them into the next battle.

"Knowledge is valuable. You should understand how the method of making poison gas bombs is valuable? You have more experience than me, and measure it yourself." Rock was so happy that he pretended to be confused, and then said.

Hearing his words, the eyes of the few people lit up. In their opinion, equivalent exchange was normal, which was not beyond their expectations.

"I guess you won't use anything else. I'll give you a bottle of top-grade boiling blood potion." Grace waited for his words, and said first without waiting for others to speak.

When she said that, she took out a test tube, which was like lava inside, which was brown and red, and kept rolling.

"make a deal."

Rock didn't say anything, and handed him a witchcraft crystal.

The witchcraft crystal is quite famous. It is produced by an organization called the 'Witchcraft Research and Confidentiality Association'. It has an additional benefit to record the production method using the witchcraft crystal. The crystal comes with a contract, so Grace cannot teach the production method to another person.

Once someone breaks the contract, there is a 39:9 chance of making a mistake every time you perform witchcraft, and no one wants to add an unstable factor.

After the two exchanged, Gray activated the crystal without hesitation, took the knowledge into his mind, and immersed himself in the production method.

A poison gas bomb production formula includes three mixed metal formulas, three mixed toxin formulas and production formulas.

More than a minute later, she stared at Rock.

"No wonder the mentor praised you so much. This is so unusual. It's a complete innovation. I felt strange when I used the poison gas bomb. So that's it."

Grace sighed that in her opinion, although the method of making the poison gas bomb is simple, the knowledge contained in it is immeasurable, which gave her a lot of inspiration and gave her a lot of inspiration at once.

After she said this, the other captains felt even more itchy and became more eager to make the method.

"Captain (me)---"

The next moment, the three of them spoke together, said a while and stopped and looked at each other.

"You two big men will not bully me, a little girl, right?" Rita looked pitiful and looked at Lede and Wao.

Even though she knew she was pretending, she said that she still gave her face.

"I have seen the captain's witchcraft. The other three are divided into top-level ones, but they lack a little in terms of speed-up witchcraft. I just happened to have a top-level 'Mist' modified model. I don't know if the captain can be more favored?" Rita took out a witchcraft crystal.

"Of course, but the production method needs to be waited for tomorrow, and I will re-bury it." Rock naturally did not dislike it, and now he could make up for his shortcomings in witchcraft.

After a while, he realized the new witchcraft, and it was indeed worth the money.

Like the "Magnetic Gold Shield", the new witchcraft is optimized on "Misty Dexterity", and new thunder particles are added, greatly enhancing the burst speed, and is called "Misty Spirit Flash".

When he studies, he only needs to optimize the original witchcraft model without much effort.

"It's not bad, it's really suitable for me." He praised, and his senses were much better for Rita.

Now, the other four captains hesitated. The two of them took the top resources as soon as they took action. The things they brought out must not be bad, and it is best if the captain can use them, and the selection range is much smaller.

Fortunately, the three of them are old-fashioned level 5 apprentices, and their resource accumulation is far from comparable to Rock. Lede also took out a top-level boiling blood potion, and Wao and Oliver each paid a medium-sized nectar potion.

"No problem, after I re-burn it, I will hand it to you the recipe in order."

Rock responded one by one, and felt happy. He couldn't help but sigh that it was the most profitable to sell knowledge, but unfortunately it was extremely difficult for the apprentice of the black witch to apply for a patent.

The nectar potion is not an ordinary potion, it can be used to heal wounds, restore physical strength, replenish vitality, etc. It is selected as a commonly used wizard advanced potion.

Behind the few people, many level 4 apprentices looked at the captains with resentment. They raised the value of the poison gas bomb production method so high that the price they had to pay exceeded their ability, which immediately dispelled the idea of ​​most people's exchange.
Chapter completed!