The extra is a fox eyed jester - Chapter 68: Letter.

Reborn as a poor young man in an unknown mountain village in another world, Lu Qing expressed his helplessness.

Fortunately, he awakened a power that could see through item information, which gave him some capital to survive.

He looked at a weed on the side of the road.

[Ox bone grass is of average quality and can be used medicinally. It is quite effective in treating bone injuries. 】

Look at the red carp in the river.

[Red Moon Carp is of high quality, with delicious meat, and is a top-quality nutritious food. 】

Look at a hare in the mountains.

[Gray rabbit, common hare, edible. 】

…

Relying on his own supernatural powers, Lu Qing gradually established a foothold in the village and was able to survive.

Just when he thought that he would spend his life peacefully in this ancient world with low productivity.

One day, he suddenly saw a figure flying past in the sky…

- Description from novelbuddy

Known as the country’s top onmyoji, Yuuma Kisaragi, who lived to the age of 99, awoke to find himself in an unfamiliar forest. A voice echoed in his mind, revealing that he had been reincarnated into another world at the age of 20.“Good morning, Master. Skip the greetings and please defeat the goblin in front of you.”The voice belonged to a skill acquired during reincarnation called “AI,” designed to assist Yuuma in his new life. When the skill, AI, took over the form of a golden-haired fox yokai, the familiar shape of Yuuma’s shikigami, he decided to embark on a new life alongside AI-chan.The onmyoji and AI-chan’s second life began, tackling various challenges and formidable enemies with the strongest spells and shikigami.

Qin Lin was electrocuted by playing a nostalgic “Ranch Story” game, and suddenly gained the ability to enter the game. He also found that he could bring the watermelons grown in the game out of reality.

At first, he calculated that a pound of watermelon would sell for 2 yuan. As long as he sells 10,000 catties of watermelon seeds in the game, he can earn 20,000 yuan a day.

Later, he discovered that by upgrading pastures, he could obtain advanced crops beyond the world, raising livestock to obtain advanced livestock breeds that were far beyond the world, and building factories to obtain various formulas that were far beyond the world, and everything was different.

- Description from novelbuddy

This is the story of a young man who was reincarnated as a dragon with a near-insatiable curiosity. Initially sparked by questioning his own reincarnation, he quickly gets lost in the endless world of magic, using his deep understanding of advanced sciences to learn the laws and properties of a new type of energy known as mana.However, soon enough, the table would flip, and he would begin using that very same energy to expand his knowledge of science, to the point that he would begin questioning his own understanding of the world.Although not his original intention, with the combination of his intelligence, expanding curiosity, and the 'miracles' that occurred to allow for his existence, he quickly found himself climbing the mountain of strength as if it were a small hill before eventually climbing to a point where it seemed as if he himself was the peak itself.Even if.. that was never the case...There is mild gore, and profanity is 'censored' toward the beginning, but not later in the story.