After finishing breakfast, Su Bai continued busying himself with his own matters. The ‘four great inventions’ had been thoroughly implemented within the Flame Dragon Tribe.

First came papermaking, followed by gunpowder, and finally printing and the compass.

The compass was not difficult. The main material was Magnetic Stone. 𝕗𝕣𝐞𝐞𝘄𝐞𝚋𝚗𝗼𝘃𝗲𝗹.𝚌𝕠𝚖

The principle was mounting a magnetic needle on an axis. The magnetic needle could rotate freely under the influence of the planet’s natural magnetic field and maintain position tangent to the magnetic meridian direction.

The north pole of the magnetic needle pointed towards the north magnetic pole. They would primarily utilise this property to distinguish direction.

The appearance of a compass allowed people to shift from relying on celestial bodies for direction.

Back on Earth, the compass was commonly used for navigation, surveying, travel and military purposes.

Su Bai intended this to help the Warriors and other personnel better identify the Tribe’s direction when venturing out.

After all, sometimes Human intuition could be wrong, and tracks in the forest were very easily destroyed.

Especially during the rainy season, if one went out somewhere following an original route, but due to continuous rain, the previously made markers were destroyed, or the surrounding environment had changed… at such times, it became very difficult to identify the Tribe’s direction.

"Shaman, what is this thing?" Yu Ying asked curiously.

"I’m performing Gene Conversion," Su Bai said, looking with satisfaction at the bottles and jars on the table.

"Shaman, what is Gene Conversion? And why do you need so many seeds?" Yu Ying flicked her pink fox tail.

Many various kinds of seeds were placed on the table: wheat seeds, rice seeds, and seeds from various fruits.

"For instance, this Green Sour Berry is rather sour, isn’t it?" Su Bai first picked up a Green Sour Berry.

"Yes, sour enough to make our face change when eating it," Yu Ying nodded without hesitation. She even revealed a slightly disgusted expression. For no other reason than this Green Sour Berry was extremely sour.

Of course, this was only for her. There were still many people who enjoyed eating very sour things.

"And this orange is rather sweet, isn’t it? Moreover, it’s a bit too sweet," Su Bai picked up an orange from the table.

This orange had grown from seeds he’d obtained from the System, cultivated and produced.

Probably due to geographical environmental factors, combined with issues regarding the System-provided seeds. Oranges grown from System-provided seeds were exceptionally sweet; the kind of sweet that was almost throat-choking.

This was not particularly to Su Bai’s liking, because eating just one or two segments made that sweetness rather unbearable, particularly hard in the throat.

However, for other people in the Tribe, it was fine. They rarely ate fruit this sweet.

Moreover, they ate them whole with the peel. The pungent taste of the orange peel neutralised the sweetness, so they accepted them quite readily.

"Yes, this orange is a bit sweet. It can only be made into preserved fruit," Yu Ying still nodded.

Yu Ying had quite liked eating oranges initially, but after production increased, the quantity also grew.

Sometimes eating too many would feel cloying, mainly because the sugar content was truly too high.

The Tribe had begun introducing preserved foods under Su Bai’s guidance with various foods pickled in jars.

Not just meat, but also some vegetables pickled in jars, and finally various preserved fruits.

"So if we combined these two, wouldn’t the oranges produced no longer be that sweet?" Su Bai smiled.

He wanted to use this step-by-step explanation method to help the other party understand more quickly.

"I see. This is indeed a very good method, but surely this is not possible?" Yu Ying certainly thought combining the flavours of two fruits would be good, but this was rather difficult to implement.

"Silly girl, you’ve forgotten I can use my Shaman Technique." Su Bai’s lips curved slightly upward.

He had obtained a Skill some time ago: Extraction and Conversion.

But due to having many matters requiring attention, he had not specifically focused on this Skill.

Just recently there had not been that many matters, plus with the rainy season’s arrival, work could temporarily be set aside.

Mainly it was seeing oranges on the table during breakfast that reminded him to use this Skill.

"Oh right, the Shaman did mention something about that Shaman Technique before." Yu Ying scratched the back of her head awkwardly, muttering, "The Shaman knows so many Shaman Techniques, I didn’t recall it immediately."

"It’s fine, you go about your business first." Su Bai’s tone was particularly gentle.

"Shaman, if there’s anything you need, you can come find me," Yu Ying nodded happily.

Su Bai flexed his fingers, preparing to begin implementing Extraction and Conversion. Many seeds were still placed on the table.

Which meant there was still much to experiment with. Not just oranges and Green Sour Berries, even wheat required solutions.

Su Bai’s idea was to combine wheat with Wolf Tail Grass. Wolf Tail Grass had particularly large grain clusters, even larger than ordinary wheat.

If the advantages of Wolf Tail Grass could be converted to wheat, then wheat would also produce large grain clusters.

Besides this, rice was the same. All three required experimentation.

Of course, vegetables were not spared either. Some plants were not afraid of insects at all.

Except for when the snow season arrived, their leaves remained tender green at all times.

There were no pest phenomena whatsoever. In the primitive era, there were no pesticides or insect repellents.

Su Bai could only make improvements in this aspect. In any case, not using Extraction and Conversion would be wasteful.

He extended both hands. One hand placed on the orange, the other on the Green Sour Berry, and began casting Extraction and Conversion.

Beams of sapphire blue light emanated from his palms, after which the two fruits each separated out a small chain of sapphire blue light.

The two sapphire blue light chains slowly combined together, like two strands of rope twisting together.

The entire process lasted a full minute. Only when the sapphire blue light slowly dissipated did Su Bai withdraw his hands.

He picked up the Green Sour Berry and orange, weighing them, discovering both were indeed slightly different in weight from their original mass.

"Let’s test the flavour first to see if it succeeded," Su Bai peeled the orange skin.

He placed a segment in his mouth, chewed several times and nodded with satisfaction. Clearly, the experiment had succeeded.

Su Bai set the Green Sour Berry aside without testing its flavour.

Because Extraction and Conversion meant extracting the advantages of one thing and converting them to another thing.

Su Bai had already extracted the Green Sour Berry’s sourness. The orange’s sweetness had not been extracted.

So, the current Green Sour Berry was still the same as before. There was no need to test it.