The fourth floor building tree lights up!

Gently covering the sleeping Beid with a piece of clothing due to mana and mental exhaustion, Night Three More looked at the now cow-calf-sized crocodile lizard in front of him and tentatively touched it.

The crocodile lizard cleverly nudged his palm, and the hot air from its nostrils quickly moistened his palm.

"I hope you are truly as magical as Beid says..."

Shaking his head, Night Three More led the crocodile lizard into a rodent pen and sprinkled some wheat straw. The crocodile lizard sniffed it and began chewing with its head lowered.

"It actually eats grass..."

Night Three More smiled and looked at the adjacent rat pen.

After a month of adjustments, the breeding of the magic rats had stabilized and began to reveal their terrifying aspects.

Of course, the terror wasn't in their claws but rather in their formidable reproductive capabilities, akin to the art of splitting.

Without interference from Beid, they could give birth to a litter every half month, consisting of 6-8 young rats. With sufficient supply of bran and grains, they could mature and be ready for slaughter in an average of one month.

To expedite the initial four magic rats' reproduction, Beid eventually took action.

Now, there were already 48 rat pups in the dormitory. At this rate, disregarding the folklore of one male and one female producing two hundred and five per year, he felt that even producing twenty-five thousand per year wouldn't be surprising.

However, the meat yield of the magic rats was not high. After cutting off the head and tail, what remained was equivalent to a rat cutlet, two loin pieces, and two hind legs, totaling around 10 kilograms, significantly less than their 30-kilogram weight.

"The internal organs are too heavy... But fortunately, these magic rat organs can be used to feed the fish."

Since he had brought back the flying fish, Night Three More was determined to try raising them.

Due to the strong activity of these flying fish, which could leap two to three meters high and possessed some level of aggression, it took him some effort to build a suitable fish pond.

Fortunately, Beid's innate magical cage was effective. Night Three More built an independent fish pond next to the rat pen specifically for raising flying fish, although he didn't plan to use them as food.

One reason was that flying fish had little meat, and the flesh from one fish was only enough for a single serving. Although the soup tasted good, Night Three More thought it was more appropriate to use them as feed for the Blackwater Toads.

After all, the Blackwater Toads had more meat, better taste, and could provide additional soul energy after slaughter.

Night Three More calculated that consuming 1000 kilograms of wheat could only provide him with 1 point of spiritual energy. In contrast, 1000 kilograms of meat could give him 100 points of spiritual energy!

The difference in spiritual energy between plants and animals was directly 100 times!

Although there was a feed-to-meat ratio for breeding animals, meaning that it wasn't possible to gain one kilogram of meat by consuming one kilogram of feed, this exaggerated ratio was hard to beat, right?

Moreover, chewing on several tons of wheat every day was something he couldn't bear.

If it was meat, he could have his servants help out. So, upon closer inspection, it seemed that his future primary food source should be meat.

At the moment, he had only four types of animals available for breeding: magic rats, flying fish, Blackwater Toads, and the newly acquired crocodile lizard.

The crocodile lizard was to be used as a draft animal, and he needed to wait for Beid to recover before obtaining another one for natural reproduction. Therefore, it was temporarily excluded.

So, the first choice for tender, plump, and ample meat was the Blackwater Toads.

"Magic rats eat wheat, flying fish and tadpoles can eat wheat straw and magic rat organs, while toads can eat flying fish. This way, a basic food chain can be formed."

Night Three More nodded, and at this moment, Sha Wencheng suddenly walked in.

"Boss, it's built."

Raising an eyebrow, Night Three More quickly walked outside.

He naturally wouldn't idly wait for Beid to conduct experiments. After Sha Wencheng brought back the bodies, he began the construction upgrade.

The corruption pool outside had been expanded into a regular fermentation pool rather than the original muddy pond.

The desolate bone burial ground was upgraded to a desolate bone tomb, with the addition of a fence. In the middle, a small mound was piled up, and one side of the mound opened into a dark little pit, inside which was a cramped tomb containing an uncovered wooden coffin.

Suppressing the urge to summon a few intermediate skeletons and skeleton commanders, Night Three More opened the construction interface.

As expected, after all buildings were constructed and upgraded, the fourth-floor building list finally lit up:

[Undead Mill] The squeaking sound of grinding bones is so beautiful that some undead who enter the mill never reappear.

This building can use human or draft animal power to drive the mill, with adjustable grinding precision. It can provide specialized training for undead workers.

Building level: 1/1.

Construction quantity limit: 0/1.

Maximum workforce: 50.

Grinding precision: Not set.

Construction materials required: 20 corpses, 50 units of timber, 50 units of stone, 50 units of bricks, 500 gold coins.

[Corpse-Water Clay Workshop] Undead, well-versed in everything about the land, is no stranger to how to make a sticky mud.

This building can mix stone powder or bone residue, clay, and putrid water in proportions to produce excellent clay. It can provide specialized training for undead workers.

Building level: 1/1.

Construction quantity limit: 0/1.

Maximum workforce: 20.

Construction materials required: 20 corpses, 20 units of timber, 20 units of stone, 400 gold coins.

[Bloodflame Brick Kiln] Resurrecting from the mud, then becoming strong. Bricks with the same excellent quality as undead are very popular among the undead and have once become stronger than swords.

This building can fire clay into hard bricks but requires a large amount of fuel. It can provide specialized training for undead workers.

Building level: 1/1.

Construction quantity limit: 0/1.

Maximum kilns: 1.

Maximum workforce: 20.

Construction materials required: 20 corpses, 20 units of timber, 50 units of stone, 500 gold coins.

[Restless New Grave] Restless deceased will eventually break through the soil again, walking between heaven and earth.

This building can resurrect flesh-containing corpses into walking corpses. Although clumsier than skeletons, due to the retention of muscles, they have stronger strength. (The degree of decay after the resurrection of the corpse is fixed.)

Building level: 1/1.

Construction quantity limit: 0/1.

Camouflage maintenance daily consumption: 0.02 soul energy/per walking corpse.

Construction materials required: 20 corpses, 10 units of stone, 20 units of clay, 500 gold coins.

[Undead Teleportation Array] The earth nurtures the undead's second life, feel her pulsation, and she will let you go further.

This building can consume fresh blood to teleport undead between two teleport

ation arrays.

Building level: 1/1.

Construction quantity limit: 0/5.

Total soul energy maximum limit for teleportation units: 100.

Teleportation consumption: 10 kilograms of fresh blood per total soul energy of teleportation units.

Maximum teleportation distance: 100 kilometers.

Teleportation cooldown: 1 hour.

Construction materials required: 100 corpses, 100 units of timber, 20 units of stone, 20 units of clay, 100 units of bricks, 1000 gold coins.

Special material: One heart (gold level or above).

Night Three More: "Wow!"