While waiting for the cold to come, Ryuji was not idle, he had already taken the undead and heroes to further dispose of the fish-man corpse.

As a mythical existence of fish knowledge, Ryuji not only knows the weaknesses of fish, but also knows very well what fish people can do.

For these fish-man corpses, Ryuji did not directly pile them all together and use them as before, or use them to transform into undead, Ryuji has his own various ideas.

He first asked people to cut off all the tentacles of the fishman, which is the weakness of the fishman, and it is also the most essential part of the fishman.

After arranging it, Ryuji put the rope in the palace of extreme cold, and let the cold air pour in full force, preparing it to be used as a rope for the ship or the rope for the city gate drawbridge.

These ropes are the relationship materials for Liuzhi's shipbuilding or castle construction in the future, and Yanagi now hopes to let the fishmen come more.

In addition to the tentacles, Ryuji dismantled all the fishmen, the most important skulls and fish-man skins were left, and the remaining bones, internal organs, and flesh were all beaten into flesh and mixed in the dirt, and were spread underground by Ryuji in the main city.

This is a method that Ryuji has researched on his own after his knowledge of fish has reached the mythical level, which is a curse enhancement for the entire city, which is considered part of the necromancer's ability.

This cursed dirt emits an aura that disgusts the fishmen, and all fishmen who feel this breath will be impetuous, and want to rush in and destroy it.

When the amount of this soil is relatively large, and the fish-man stays on this soil for a long time, the strength of the fish-man will even be affected, and the life will be slowly absorbed, and the strength will decrease, etc.

And Yanagi uses this as the base of the second underground layer of the main city, that is, he wants to turn the city in front of him into the city that the fishmen hate the most, so that they want to knock it down as soon as they see this city.

And the blood of the fishmen shed when attacking this city will continue to strengthen this curse, and finally make this city a cursed city of fishmen.

This is Liu Zhi's plan this time, and it is precisely for this reason that he will attract the cold in advance.

After preparing all the dirt mixed with the fish-man's blood mud, Ryuji began to spread the dirt layer by layer on the ground of the city with the help of the undead.

Liu Zhi is going to build a big city this time, and the entire city must be able to survive at least a million undead, so the main urban area of the entire city is quite large, and the blood mud of nearly 200,000 fishmen has barely laid a foundation.

After that, Ryuji began to direct the cold qi to inject into the blood mud, and used the cold air to freeze the blood mud.

After that, Ryuji spread a layer of cobwebs and alchemy potions on it, and this began to make the undead start to add stones to it, and lay the foundation firm.

After that, Ryuji will need to add a layer of dirt to this place before he can start installing sewers and the like.

When the foundation is filled in as high as the original ground, Ryuji will start building the city here.

Even if someone attacked it at that time, they would not know that there would be such a design about 20 meters underground in this city.

Watching the ice and yin qi freeze all the blood and mud, and watching the undead start to bring in all kinds of stones, Liu Zhi didn't look any further.

The setup had already begun, and the next thing he had to do was deal with the fish-man's skull and skin.

The skin of the fish-people is actually the last layer of defense of the fish-people, most of their skin has scales on it, and these scales still have some mucus or something.

However, after they die, the scales on the fish-man's skin will dry up and fall off, and the mucus or something is even more useless, usually used to grind it into powder and serve as some supplementary food.

But now that there are so many fish-man skins here, you can't use them like that.

Ryuji has a mythical knowledge of fish, and of course he has some ideas, after peeling off the fish-human skins before, he asked the undead to send the fish-human skins to a large pit nearby.

And let the goblins send a lot of strong acid.

The characteristics of the fish-people are more strange, their skin is against his quicklime, just like humans are against strong acid, but they are thrown into the strong acid, and the fish-man skin will be stimulated to a certain extent and become tougher.

Of course, this kind of toughness can't compare to cowhide or anything, and no one wants to use fishman skins to make any equipment.

Ryuji didn't plan to use fish-man skins to make armor or anything, even the undead under Ryuji didn't want to use it.

But Yanagi can cobble together these fish-man skins and make the sails needed for Yanagi's sailboat.

The texture of this sail will definitely be better than that of a regular sail.

And Yanagi believes that as long as he draws something like a curse circle on it, he will definitely make the sail have some curse and deterrent effect on the fishman.

This is the most needed attribute of the entire plane right now, and maybe Liu Zhi can treat this as a business.

The last thing to deal with is the fish-man skulls.

For the treatment of the fish-man skull, Liu Zhi thought of the most methods, at first Liu Zhi wanted to use these skulls to build the city wall, so that the city wall can have a certain deterrent effect on the fish people.

But Ryuji tried it and found that this was not very good, because the fish-man skulls were no match for stones, and if they wanted to have an effective deterrent, they would need a lot of skulls.

If too many skulls are put inside the wall, it will definitely affect the strength of the wall, and it will be more than worth the loss.

So Ryuji simply changed the skull to another purpose.

Now all the fish-man heads were placed in a clearing relatively far from the city, and the skulls were placed on the ground, each skull was lit with a candle, and the dark blue candle flame drew a fragment of the fish-man's soul in the fish-man's head.

The soul fragments would be guided back and forth through the skull, in and out, and eventually the skull would be dyed blue.

After that, the undead under Ryuji would pick out the blue skull, wrap it in dirt and dry it, and finally make it into a stone projectile for trebuchets. ，

This stone projectile made from a fish-man skull, when exploded, releases a fragment of the fish-man's soul strengthened by candles.

Those soul fragments carry a kind of resentment towards the fishmen, and they have relatively strong lethality against the fishmen.

And Liu Zhi is just about to establish his own city defense system, and it is a good choice to use these fish-man skulls to make stone bullets for catapults.