The Whitney cotton gin, also known as an angel and devil's invention, saved America's cotton plantations, but prolonged slavery and continued the slave trade for decades.

And the reason why Qin Song knows so much is not accidental. This is thanks to his grandfather Quan Yanming, a professor of mechanical design, manufacturing and automation at a university of technology, who has been engaged in mechanical design education for a long time and has trained dozens of talents in the field of mechanical design for the country.

In Qin Song's childhood, due to his parents' work, he spent most of his time at his grandfather's house. After retirement, my grandfather's favorite thing was to tell him all kinds of interesting invention stories, take him to visit various science and technology museums, civilization development museums, and try to cultivate his interest in science from an early age.

It's just that in the end, because of Qin Song's personal interests, he did not engage in the mechanical industry, but devoted himself to the tide of the Internet. However, that precious childhood still left a deep impression on him.

This is the main reason why Qin Song regards Alice as his greatest wealth!

"Alice, he who loves to be taught, loves wisdom. He who hates counsel will fall into foolishness. Qin Song's confident voice echoed: "Your sincerity has been moved, and you deserve a wise response." ”

Mind cost 1.

Mind cost 1.

Mind cost 1.

Slowly in Alice's place appeared a wooden crate, with her familiar handles on the outside, and two adjacent rollers inside, one with hooks like the teeth of a beast, the other with a brushes like horsehair, and a row of metal teeth on the sides that joined the hook rollers.

A total of 11 mental values were consumed, which was almost a day's mental recovery, which made Qin Song feel a little distressed, and he was reluctant to consume any more inconsequential cotton embodied in his mind.

"Alice, the one who thinks well, can burst into the spark of wisdom. Use your imagination, I'll be staring at you forever. ”

Alice understood what the gods meant, to ask her to think for herself, to find out what this tool could do. She gently held the crank handle with her hand, driving the hook teeth to rotate, and the fixed brush wiped the hook teeth, making a swishing sound.

There is no doubt that this must be a great creation!

With the accumulation of experience in the manufacture and improvement of the juicer, Alice easily understood its mechanical structure, wooden rollers, metal hooks, and bristle brushes, everything seemed so simple, but the combination became a whole, and it was so harmonious, full of wonderful beauty.

"Alice, thank you for your inspiration! Great God, bathed in the light of your wisdom, I feel extremely fortunate and proud. ”

"If you love wisdom, wisdom will love you." If you have wisdom, she will give you glory. Go, child, and sow the light of wisdom. ”

Detached from Alice's dream, Qin Song checked his tiredness and only increased by 23%. It seems that the length of time he stays in the dream is tied to his completeness, otherwise with the soaring tiredness at 1% completeness, he can only stay in the dreams of two witches for a short time at most one night.

Linda must be eagerly awaiting his arrival, and there is an Elena waiting to be discovered. Time always seems to be running out, and the only solution is to unlock the [Connecting Thalamus] and realize the connection of dreams as soon as possible.

Alas, it's just a pitiful mental value, after advancing the [Eye of Insight] and concretizing the cotton gin, only a pitiful single digit remains—4 points.

Linda lay on the little bed, her eyes open, and she stared at the roof in a daze. It was the third time she had woken up, but she had never dreamed of the great god.

It made her feel a little lost, I must be too stupid, right?

What is the wonderful knowledge of the stones in nature? Linda has thought about this question countless times, but she has never been able to find a clear answer.

Gradually, Linda fell asleep for the third time. In a dream filled with soft light, she held a stone in her palm, searching for answers as she searched around.

Coming to Linda's room, Qin Song first checked her state.

Tiredness increases by 5%.

Name: Linda Paltrow.

God of Faith: The dream god of the innocent girl, the master of a thousand witches, and the majestic Krem.

Faith: 52% (Believe)

Loss: 37% (lost)

Trait: Heart of the Rock

Level: Lv2

Constitution: 11

Mana: 5

Potential: ★★

Rock Power Lv2, proficiency 22/60, can draw power from rocks and store them in stone skins, increasing the amount of rocks it absorbs will cause it to disintegrate.

Compared to Alice, Linda's upgrade is indeed slower, but she has been working hard to practice her ability, but this is the innate gap between two-star potential and three-star potential.

"Linda, I sense the loss in your heart. "The greatest use of loss is to determine the emotional state of a witch so that you can prescribe the right treatment.

Linda raised her head in surprise, her long silver hair was scattered, her eyes were full of excitement and a little ashamed: "Great god, am I too stupid? ”

"Hahaha...... Child. Qin Song's good-natured laughter came: "Every realm of nature is wonderful and mysterious. I have sensed the growth of divine power within you, and you have obtained the key to unlocking the answer. ”

"Really?" Linda raised her delicate little face and showed the stone in her palm, "I feel that there is some kind of power in the stone. ”

"That's the power of nature. Qin Song patiently encouraged her: "Stone is the foundation of the world, and stone is the most generous gift of nature. They are everywhere, no one notices, and they will always support the world silently with the most simple and silent attitude. And you, Linda, will use your divine power to uncover the secrets hidden in the stone yourself. ”

Qin Song is not lying, the importance of stone to human civilization is no less than that of flame. Whether it is construction, smelting, transportation, agriculture, industry, or even aerospace, aviation, navigation, electronic and electrical, weapons and equipment, including CPUs that integrate the essence of human wisdom, most of their raw materials are taken from stones in nature - that is, various minerals.

Hearing the gods' praise of the stone, Linda's gaze gradually became hot, she never imagined that this inconspicuous stone would be the foundation of the world.

And she has gained the divine power to explore the secrets of the stone.

What a blessing, what a blessing!

It turned out that the gods had never despised her, but generously bestowed on her such great divine powers. Linda's eyes glistened with tears of excitement: "Great god, thank you for your kindness to me. I will put aside all doubts and ask you to enlighten me to explore the knowledge in the stone. ”

"Linda, there are thousands of stones in this world, and there are also thousands of secrets. Every different stone has its own wonderful knowledge that no one knows. ”

"Wise God, I have a request. Linda did not forget her friend Alice, and reverently half-knelt down: "Alice and I became your believers, and also fulfilled your prophecy and became friends." Now, for my friend Alice, I would like to ask you for ......"

"Linda, Alice has been inspired by me, and I'm sure she'll take advantage of it. ”

Linda was stunned for a moment: "You really know everything. ”

"But, Linda. There is never a single solution to a problem. You will also be inspired by me, a different kind of enlightenment!"

"Listen to your wisdom. ”

"A black, shimmering silver stone, the answer is hidden in it. ”