The mission is very clear, this is not a task for Leo alone, but for the entire gathering place, so the criterion for judging this mission should be on this 'least consumption, strongest defense'.

What is the least consumption?

Human and material resources.

Manpower represents the number of front-line personnel involved in the defense, material resources are nothing more than money, but the money used by wizards is magic stones, so as long as the least number of personnel participate in the defense, and do not consume too many magic stones, then even if the first requirement is met.

What is Defense?

Or human and material resources.

Fewer personnel means weaker defense, and too little investment in magic stones also means less defense, so only by establishing a defense system that has nothing to do with human and material resources as much as possible can the second requirement be satisfied.

After sorting it out one by one, Leo has a little eyebrows, so the most important thing now is to clarify the object of defense, as well as the specific information related to it.

Leo left the God Space and took out the crystal ball and began to contact Xin Yan, he did not establish a projection contact, after all, it required spiritual power to continuously mobilize the magic factor, so he could leave a message.

"Senior brother, who are the main objects of your defense on the front line?"

At this time, Xin Yan had already returned to his laboratory, and the contact crystal was inducted, and he took out the crystal and found that it was Leo, and quickly established a connection.

"There are three main subjects, the dwarves, the Roggs, and the orcs. "As Xin Yan, who often goes to the front line, there is no need to think about it at all.

Leo said: "Are the dwarves red-skinned gnomes, green-skinned goblins and blue-skinned dwarves, what races and specific abilities do the Rog clans and orcs have?" ”

Xin Yan said: "The dwarf clan is right, the Rogge clan is similar to people, they mainly use cold weapons to fight, they have high resistance to spells, and their speed of action is very fast.

There are many types of orcs, the most important of which are apes, cows, sheep and some mutant races, which use cold weapons for melee attacks and natural spells similar to spells for ranged attacks.

If it weren't for the low intelligence of these races, with the number of horrors they have now, we really wouldn't have been able to fight them. ”

The contact crystal fell silent, and Xin Yan didn't ask Leo, waiting quietly.

After half a ring, Leo's voice came out: "Senior brother, do we take the initiative to attack on the frontline battlefield or stick to the defensive line?"

Xin Yan said: "It is we who take the initiative to attack, and it takes a lot of time to clean up and consolidate every place we occupy, these magic creatures are very fast, they are like they can't be killed, every time they clear a place, they will re-emerge after a while, so the advance speed of the front line is very slow." ”

Leo: "In other words, the mission this time should be to establish a defense system in the fortified area, so as to free up more defenders?"

Xin Yan: "Yes, it should be that the front line has captured a place, so there will be this mission." ”

The Contact Crystal fell silent again.......

After a quarter of the hourglass, Leo said: "Senior brother, I have the corpse of the dwarf clan, can you get the corpse of other races, of course it is better to live, but it is really not possible to have the key parts of its body." ”

"Give me half a month. Xin Yan didn't postpone it, and directly set a time.

"Okay, I'm going to think about it during this time, and I'll contact you in half a month. ”

In room 9, Leo put away the contact crystal and entered the God Space, in the corner of the space were rows of tall bookshelves, Leo walked to the bookshelf that summarized the knowledge of pharmacy and patiently searched for it.

There were twenty bookshelves lined up side by side, each of which was more than one meter wide and two meters high, which was just right for him, who was more than seventeen years old at this time and had reached a height of one meter seventy-five.

There are no crystal balls on the shelves, all books written on paper, and the words inside are the universal words of this world, and they are only the words recorded in the crystals.

Leo didn't have the ability to forget, at this time he only had to check one book at a time, and there were many ways to build a defensive line, traps, traps, these were the first things he could think of.

He had dissected all three corpses of the dwarves, and these creatures demonized by the magic factor were not only terrifying in terms of high resistance, but also had a lot of defense against cold weapons.

It's not that Leo hasn't thought about things like city walls, moats, bows, and cannons to build a defense system, but the reality is simply impossible, one is that he doesn't have that ability, and the bow and crossbow are okay but they may not be able to pierce the skin of magical creatures. The second is that even if these things can be used by ordinary people, they must be able to keep up with the speed of magical creatures.

All Leo can think of now is to set a trap, a trap that ordinary people can set, but ordinary traps can't cause damage to it at all, unless they have special abilities, so Leo is currently thinking of adding other abilities to the trap, and the first thing he thinks of is poison potions.

The formula of the potion only has a formula for improving mental power, and nothing else at all, which requires Leo to prepare it according to his own knowledge.

Half a month later, Leo was standing in a corner of the space, where he had conducted his experiments, all of the equipment he had generated in his laboratory in Innwana, and he was carefully dripping liquid into a beaker.

The original green liquid in the beaker instantly turned red, and then began to bubble out, one after the other, and the gurgling sound was endless.

Leo didn't know how many times he had experienced this situation, he methodically put the beaker into the ice water that had been prepared long ago, and the alternation of hot and cold did not affect the beaker in the slightest, until the red liquid was no longer bubbling.

"The juice of the pothos root has a paralyzing effect, the pollen of the copper flower is sticky, and the stinging scorpion destroys the nerves and penetrates the venom, as long as it reaches a certain percentage, it will not destroy their respective characteristics, so now the rest is to purify and improve the toxicity. ”

Leo slowly began to purify, and the mental power was mobilized, and a simple witchcraft was formed, acting directly in the red liquid.

Alchemy, which is a form of sorcery involved in primary alchemy, consists of fire-based heating runes, mechanical spinning runes, and compression runes.

In the past, Leo had only learned about alchemy and had not considered inscribed these three runes, but when he used this magic in space, he realized that this magic was essential to the experimental materials.

The effect of the refining technique will last for a while, and after thinking about what was missing, Leo left the space and began to contact Xin Yan, "Senior brother, how are things going?"

Not long after the message was sent, Xin Yan's voice came out, "Wait for me, I'll come over immediately." "Apparently the other party has been waiting for Leo's information.

'Aggressive'

Leo opened the door, and outside was Xin Yan, who was dressed in a black robe, walked into Leo's room with a click, and took out a storage bag without saying nonsense and began to take out materials.

'One meter seven tall, proud of female features, delicate facial features, broad ears and pointed at the level of the head, fingers pointed and thin, nails blood red, chest, legs, elbows, shoulders bones long outside the body, is this the elven clan after being demonized Rogge?' Leo carefully looked at the female corpse in front of him, and after a moment asked, "Senior brother, why is there no male Rogge's corpse?"

Xin Yan's hand stopped moving, and said with a smile: "I knew you would ask this." In the past, the elves had males, and now the Rogue clan is all females and no males, and their reproduction is completely dependent on a kind of water, as for what kind of water no one has seen so far. ”

Female?

River water?

Pregnant?

Mother and Son River!

Isn't the elven clan the daughter of the wizarding world?

If it is really such a river, Leo does not doubt its powerful ability at all, it is a divine water that kills both men and women, if the wizard gets this kind of water, will he still worry about the continuation of the extremely low bloodline?

Leo shook his head speechlessly and looked at a creature next to him, with long hair, but a pig-sized body with a rat head, isn't this a hairy mouse?

"Senior brother, this hairy rat is also an orc?"

Xin Yan nodded and said: "Yes, the magic creatures are divided into three categories: sky, earth, and sea, among which the orcs and native creatures have been demonized by the magic factor, and the changes between them are almost the same, and all of them are classified as orcs." ”

There were only five corpses of magic creatures in total, and Xin Yan took out this half-month's harvest and said with some embarrassment: "Senior brother, now many people are preparing to complete the task, and they can only find these at present." ”

Leo nodded and said, "Thank you, senior brother, these are enough." ”

"Senior brother, thank you for your hard work. Xin Yan's gloomy voice actually revealed an embarrassed emotion.

Leo shook his head and said, "It's not hard, I'm also for myself." ”