Due to his small size, Spotted Cloth's first biogas pool was relatively modest. After the initial filling, which produced only a small amount of biogas sludge and water, it didn't take long for most of the resources to be depleted through two rounds of irrigation and fertilization.

Refilling the pool and sealing it, Spotted Cloth found it still functional for the time being. He decided to focus more on clearing weeds in the newly sprouted bamboo forest, both stockpiling grass and aiding the growth of the bamboo seedlings.

During the day, he cleared weeds, while at night, he delved into martial arts cultivation, combining physical and mental labor without wasting time.

The number of caves where he meticulously recorded his martial arts insights and diagrams continued to increase, reaching up to 11. Starting from nine basic structural diagrams, he meticulously detailed each step, resulting in over 300 illustrations and over 100,000 words of text annotations.

The greatest challenge in martial arts cultivation lay in two aspects: the complexity of body veins and heart structure, and the increasing number of hearts with each molting evolution.

By recording and comparing the increase in heart numbers after multiple molting evolutions, Spotted Cloth gradually discerned a pattern.

He now had a general idea. He first developed a set of "universal cultivation techniques" corresponding to the current number of hearts as a basic template. Then, with each evolution, he adjusted and modified the techniques according to the changes in heart numbers.

With a clear direction, Spotted Cloth officially began the final stage of martial arts cultivation—the refinement of techniques. He carved out a spacious new nest chamber dedicated to recording the finalized foundational cultivation techniques, making it convenient for corrections at any time.

As spring progressed into early summer, the jungle resounded with the bustling symphony of life—birds chirping, beasts roaring, and insects humming—a lively scene of life's flourishing.

Iron Knife Peak.

Three Gifted Seed shoots of xun grass had exceeded a height of 200, with broad and thick leaves shimmering with purple veins, robust and vigorous, and their spikes were about to blossom and bear seeds. Clearly, this year could yield two batches of xun grass seeds in the summer and autumn seasons.

The two Gifted Seed shoots of reflective fruit and white jade mulberry had reached a height of about 60.

The side cypress tree was the slowest-growing tree among all the Gifted Seed shoots planted by Spotted Cloth. Even after reaching a height of 30, its growth slowed even further, barely increasing by 5 in nearly a month. It currently stood at a height of only 35.

The iron knife tree sapling grew even slower. When its height reached around 15, it seemed to hit a bottleneck. It took ten days or more to grow a single new leaf and slightly increase in height. Spotted Cloth was frustrated; with such slow growth, delicate saplings needed careful nurturing, or they might wither under the scorching summer sun.

On the other hand, the xun grass shoots developed rapidly in contrast to the trees. With abundant rain and sunlight, they grew faster with each passing day, soon reaching a height of 400 for the first shoot.

Unlike trees, once the xun grass shoots reached maturity, they stopped growing upward, absorbing nutrients and sunlight. The focus of their growth shifted to underground rhizomes. After the rhizomes matured, they would sprout three new shoots. Currently, the shoots had just emerged from the ground, poised for vigorous growth.

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Every night, Spotted Cloth would rest under the xun grass and reflective fruit shoots, absorbing the accumulated original force from them. The quantity was quite considerable, providing significant benefits to the growth of a Level 9 junior warrior.

In contrast, the Gifted Seed shoot, which received the highest expectations and the most frequent fertilization, did not show satisfactory development. After three generations of growth—three to nine to twenty-seven—it seemed to reach its limit, no longer producing new shoots. The number of leaves and the height of both the mother plant and the offspring remained fixed, relentlessly absorbing nutrients, sunlight, and original force every day without showing any signs of growth.

As early summer arrived, there were no signs of flowering or seed production, making it seem like a useless plant that only consumed without growing.

However, the tree spirit within the Gifted Seed mother plant developed quite well, with its soul becoming increasingly solid and robust. It had autonomously learned various ways to express emotions, and whenever Spotted Cloth approached, it immediately arrogantly issued commands: "It's time to water," "Hurry up and fertilize," "The offspring doesn't feel comfortable, loosen the soil over there," "There's a patch of weeds threatening my growth, quickly kill it..."

...

In the early morning, as Spotted Cloth was cutting grass in a bamboo forest on the mountainside, Pudao flew over and landed.

"Spotted Cloth."

"Pudao, it's been a while."

Spotted Cloth replied, pausing

his actions.

Ever since Spotted Cloth advanced to a Level 8 junior warrior with considerable self-defense capabilities, Pudao hadn't visited, not for almost two months. Even Flame Cluster Spotted Grass had only visited once during that time.

Pudao replied, "Indeed, it's been almost two months. Spring is the busiest season, and there's been a lot to do in my territory."

"I understand, Pudao. You're the hardest-working warrior in the Iron Knife Mountains."

Spotted Cloth's words were not flattery. Pudao's Gifted Seed had thrived solely due to its diligent cultivation efforts.

Pudao said, "Spotted Cloth, I've seen the biogas pool at Iron Knife Peak. It's so useful. I heard you taught them how to make it?"

"Yes, it's a little trick recorded in my inherited memories for obtaining fertilizer."

Pudao lamented, "I also want to make one, but the mountain I chose is too low, and after circling with Li Zhu, it seems we can't find a suitable place to dig the biogas pool. Spotted Cloth, do your inherited memories contain any descriptions of how to solve this problem?"

...

Spotted Cloth was speechless for a moment, then said, "You can dig it anywhere."

To avoid occupying plant growth space on the mountainside, Spotted Cloth chose to open up a passage along the cliff and then vertically excavate the biogas pool inside the mountain.

However, Li Zhu still failed to understand the principle of the biogas pool and believed it necessary to dig into the inner side of the cliff, completely imitating Spotted Cloth's method of constructing the biogas pool.

Pudao was even more confused, unsure, and asked, "Anywhere? But my territory doesn't have suitable cliffs."

Spotted Cloth explained, "It doesn't have to be a cliff. You can dig straight down on flat ground, preferably into the rocky layer, to ensure sealing and moisture retention. The key is to keep the wellhead small, just enough to accommodate your body for easy cover and sealing."

"Oh." Pudao remained somewhat bewildered, somewhat embarrassed, and said, "Spotted Cloth, could I trouble you to come to my territory and help me figure out where to dig?"

It's difficult for those who don't understand the reasoning to be flexible and resourceful. These bugs have no scientific knowledge. They can't explain it clearly; they can only be told a complete set of methods and then follow them step by step.

Feeling helpless, Spotted Cloth readily agreed, "No problem, anytime."

Pudao asked, "Today okay?"

Spotted Cloth replied, "Today is fine."

...

Accompanying Pudao to his territory, Spotted Cloth quickly selected a location on the mountain ridge after a brief tour.

"Pudao, we need to clear away this patch of soil."

"A large area?"

"Not necessary, just a small patch."

After clearing away the topsoil of the mountain ridge, they revealed the underlying hard brownish-gray rock layer.

Spotted Cloth said, "Pudao, we'll dig vertically down from here."

Using his front limbs' toes, Spotted Cloth sketched out a simple pattern on the ground and continued, "You see, dig it in this shape. The smaller the wellhead, the better, with a larger internal space but not too deep."

"After completion, find a suitably sized stone slab to cover it. Surround it with soil to seal it, leaving only a small hole for ventilation."

"Dig two drainage ditches around the wellhead to guide rainwater and prevent flooding inside the pool during heavy rains."

"Has Flame Cluster Spotted Grass made a biogas pool yet? You can collaborate, with one digging below, specializing in excavation, and the other standing above, using a snake-skin bag to transport stones. It'll be much more efficient, and I estimate it will take two days to complete."

...

Pudao was slightly smarter than Li Zhu. Spotted Cloth explained in detail the principle of "biogas bacteria" decomposing plants, and Pudao could roughly understand it as tiny organisms that didn't like air eating plants. The biogas pool was for raising these organisms, and biogas water and sludge were their excretions.

Pudao interpreted bacteria as "organisms," which wasn't entirely wrong, so Spotted Cloth silently acquiesced.