【Ding! The Treebinder Ritual is completed, and the Underworld Ecosystem is officially opened, with the current level 1 and a total of 3 Treebinder areas can be established. 】

[Underworld Biosphere Level 1 (Special Skills): Establish an underworld ecosystem dedicated to the underworld city, cultivate special creatures that can live in the underworld, special upgrade methods, you can't use experience to upgrade, and the upgrade requires the establishment of three different systems of Treebind areas (1/3), and one of the Treebinder areas must reach level 2]

[Tree Binding Spirit (Aquatic Plants-Fish-Man System) Level 1: The symbiosis system of evil aquatic plants and fish-people located in the water burial area, the upgrade requires the survival of 200 ordinary fish-people (0/200), 50 fish-people (0/50) in the underworld, 10 fish-people (0/10) in the underworld, hidden requirements: 1 heroized fish-man (0/1)]

Looking at this prompt, Yanagi knew that his underworld ecosystem would take a long time to complete, and the others could be faster, such as planting a tree or something, Yanagi has a bumper harvest of divinity here, which can make plants grow quickly.

But the output of the fish-man Yanagi can't be so fast, if you can't earn a lot of fish-man eggs, then it will take at least one or two years to meet the first requirement by relying on these twenty fish-people to live.

That's not all, the most important thing is that what is needed here is the three tree binding spirit systems, which means that Liu Zhi needs to do two more for the same thing.

And Ryuji couldn't help but do it, since he meditated on the Nature's Breath meditation method, he knew that this was a route unique to the Id family, which was related to the advancement of the necromancer rank.

The requirement for the promotion of the level of the rhomage is not that you play a game, just have an experience and add experience to it, and the experience is used to improve the skill level.

Players are all leveled by their chosen path, as well as their class.

Upgrading from level 1 to level 2 is relatively simple, as long as the corresponding meditation method and special skills are upgraded to level 2.

After level 2, there will be corresponding mission requirements, and it is getting harder and harder to level up anyway.

Ryuji's Necromancer upgrade requires a meditation method to be upgraded to level 2 (either meditation method is fine) and a special skill to level 2 (a minimum of three special skills are required).

In the former requirement, Liu Zhi has more choices, and in the latter case, in addition to the master of the underworld, Liu Zhi only has a special skill such as the underworld ecosystem.

In other words, he has to learn another special skill later, and if he gets stuck here, he will really be stuck to death.

Sighing, Liu Zhi glanced at the preparations in the lake of water shortage, he was already preparing, and when he went out, he would ask those policemen if he could get a large number of fish eggs, to be honest, only relying on these twenty fish eggs, if there was a slight problem, he would have to start all over again, and he was okay in terms of energy, but he couldn't afford to lose time.

With this thought in mind, Ryuji walked to the mass grave.

Since the last time the Id family gave enough flesh and blood, Ryuji's mass grave has finally ushered in its first upgrade.

At this time, the mass grave covers an area that is twice the size of the original, and there are even many wooden tombstones in the innermost part.

Standing on the control bar of the mass grave, there are some new changes, and now it is directly divided into two columns, corresponding to the combat troops and the labor troops.

In addition to the original skeleton soldiers, golden skeletons, skeleton archers, and ritual skeletons, there are two new types of troops in the combat unit, all of which are transformed from the walking corpses, namely the plague walking corpses and the claw zombies.

[Plague Walking Corpse: A walking corpse that slowly begins to decay, with corpse poison on its body, and will automatically emit a green plague outward, as if it is a walking plague source. 】

[Claw Zombies: Walking corpses with sharp hands, they have a decent movement speed, but their greatest strength is still in that pair of claws. 】

In addition to the Skeleton Sailor, Skeleton Goldsmith, Herb Picker, and Skeleton Laborer, there are four new existences on the Labor Force, namely the Skeleton Minecart, the Miner Zombie, the Blacksmith Zombie, and the Skeleton Farmer.

[Skeleton Minecart: A minecart made of Bone Creeper and wood that can move on its own on the ground, and can carry 100 kg of ore back to the surface each time. 】

[Miner Zombie: A walking corpse that has mastered the ability to mine, has no self-awareness, and only knows how to keep digging. 】

[Blacksmith Zombies: Walking corpses that can be arranged to do some rough work in the blacksmith shop, even if they are burned, they will not have any reaction. 】

[Skeleton Farmer: Dig the land, plant seeds, harvest, as long as it is in the farmland, the skeleton farmer can complete it. 】

Looking at these situations, Liu Zhi generally understood that the mass grave was played like this.

Bone creepers, wandering skeletons, and walking corpses in mass graves are the foundation, and all other classes are developed from these three basic undead.

In that case, there are actually a lot of parts that can be experimented, especially the Bone Creeper that Ryuji didn't notice at first, maybe he is not a good undead in terms of acting as the main combat force, but what about other aspects?

Ryuji felt as if he had too much to think of.

With this line of thought, Ryuji was about to study it carefully, when he heard a trumpet sound coming from the city wall.

"What is the situation, I remember that there is no horn in my palace."

With such doubts, Liu Zhi dodged and appeared at the location where the horn sounded.

When he got there, Ryuji noticed that it was Mande who was blowing his own horn.

Seeing Ryuji appear, Mande did not stop, and kept blowing there, and the various troops under Ryuji quickly rushed to the city wall and prepared for battle according to the position designated by Mande.

"Lord City, the situation of your troops is not very good, the long-range troops, that is, those skeleton shooters, look quite weak, they shoot far, but their shooting accuracy is not at all, I think we may need other troops to supplement, in addition, we still lack some rapid assault troops, and the air defense force also needs to be formed."

Listening to Mande's words, Ryuji also knew that his subordinates were not very good, but wasn't his Hades just beginning? It's not a very normal thing to not have many troops.

"Lord of the City, please be sure to replenish your troops quickly, I found that your city is in a rather dangerous area."