"I have completed the original agreement, and now you should tell me the answer I want."

The Moon God has handed over the principles of the two spell seals and is eager to know what is about the gravity of the earth.

Gravity, how should I tell her...

Lu Yan learned a lot. Do you still remember the systematic lottery he saved for more than three years in Sanghai?

Since he had collected the seven swords and seven swords skills, Lu Yan has never drawn martial arts again. A Ziwei soft sword was given to Zinniao, an Easter egg character card summoned Su Lie, and the rest were all books.

It mainly contains the works of various schools of thought that have been circulated in later generations, including "Mozi", "Gongsun Longzi", "Guiguzi", "Taigong's Art of War", etc. Of course, because it was circulated in later generations, it has a lot of dispersions, and there is still a gap with the books of the hundreds of schools of thought in this world.

There is also "The Art of Heaven" which is known as "China's 17th Century Encyclopedia". It is learned from here and then successfully experimented.

However, I have never drawn any books in science and engineering. Lu Yan's weak physics and mathematics knowledge has long been given to the teacher.

Just try to talk about gravity~ Anyway, the moon god doesn’t know whether what he said is true or false.

"Since you asked me, you already know that we live on the same ball, and there is unlimited space outside the ball."

As he said that, Lu Yan ignored the reaction of the moon god and used the internal force of the ice to condense one sphere after another, suspended in the air, and barely rearranged according to the memories in his mind according to the appearance of the solar system.

"These eight balls are the planets in the solar system as I know."

"Planets, moving stars?"

He then condensed a large fireball with the internal force of the fire, put it in the middle, "This is the earth where we are. The planets revolve around the sun. The earth runs around the sun for about a year. At the same time, the earth will rotate, and it will take about a day for an autobiography."

The moon god's eyes were shining, "The four seasons alternated, and the day and night were rotated...what the moon?"

Lu Yan condensed an ice bead on the edge of the earth again, "The sun shines and heats up, but the moon does not. The moon revolves around the earth and reflects the sunlight, which becomes moonlight."

"I understand. Last time you said, the name of your husband is actually. Gravity is why the moon revolves around the earth and why the earth revolves around the sun. On the Yin-Yang star map, a big star must revolve around countless small stars, which should be what you call gravity. This is called the solar system, the sun has the strongest gravity, and all planets revolve around it."

The moon god unconsciously showed a shallow smile and used internal force to push the solar system to start operating.

"There are also gravity between planets. They are restrained by each other, but they are attracted by the sun. There are 365 a year, but there are 366 a year every four years. It should be the time when the earth revolves is just what you said, about one year. The error here causes one day to take more than four years.

The gravity of the earth, people are sucked on the ground, we call it weight, you call it gravity. It is related to gravity, but it is not the same name, why?"

Lu Yan asked back: "The earth is turning, why can't we humans feel it?"

The moon god came up with a question mark, right, why?

"It is because the gravity of the earth pulls people together and keeps relatively still. Gravity not only pulls people around, but also pulls people on the ground. Those who pull people on the ground are called gravity."

"Relatively still... I understand that gravity is only part of gravity." Moon God was a deserted person, with only shallow traces on his face, and his eyes flashed with excitement.

Lu Yan noticed her spirit and praised, "You have a strong ability to accept."

"Then why is there gravity?"

Lu Yan:...

"This involves more advanced knowledge, which is beyond what I have learned.

It is said that the solar system has been formed for 4.6 billion years. Human beings have to use their lifelong vision to peek into such a universe, which is really small and great."

"I understand a little, Lord Donghuang's pursuit..." Yue Shen murmured, and suddenly asked: "Do you know how to break through gravity and go to other planets?"

This is really going to go to heaven!

Lu Yan rolled his eyes, "If you can break through the gravity of the earth with a simple speed of 200 miles in just one blink of an eye."

The moon god moved his nose a little cold.

"Okay, this is all I know about the invisible power between heaven and earth. This transaction will end here."

Lu Yan is ready to issue an order to expel guests.

She understood this meaning, and as she stepped over him, a clear word reached her ear, "Thank you."

But when she walked to the door, she stopped again, "It was just our agreement just now, and next, the sincerity of the Yin-Yang family."

"Papa~" Moon God gently patted his palm.

I saw a beautiful woman in a pink dress walking out.

The eyes are like a clear pond, like crying but not crying.

When Lu Yan saw this look, he was displeased: This is another woman who has lost most of her mind.

"Ehuang has met the National Master."

A delicate and cold night, like a rain of tears.

In the words of later generations, Ehuang's dress was just a strapless bra. It was a scarf that was in the middle, and it was crossed through the middle of the collarbone and connected to the sealing belt of the neck. The skin was exposed than snow, and the thin waists on both sides released their charm without any obstruction.

She gave a gift, and Lu Yan was a little puzzled.

"What does this mean?"

The moon god's words were inexplicably meaningful and he glanced at Ehuang, "She will be a member of the National Master's Mansion in the future."

What?!

Lu Yan laughed for a moment, "You Yin and Yang family have a spy here. Do you call this sincerity?"

Gu Shuang had no nonsense, and the sword had already brewed.

"She is not considered a spy from the Yin-Yang family."

Ehuang immediately knelt down on his knees when he heard the Moon God's words, "Ehuang is to repay the National Master's life-saving grace of Lord Guo and... and his husband. He is willing to be a slave and a servant in the National Master's Mansion."

Seeing this, the moon god continued, "She no longer belongs to the Yin-Yang family, a person who cannot even participate in the combination of the five elements. Humph~ If she hadn't taken the initiative to petition to serve the National Master... she had been dealt with."

Ehuang kowtowed, "I beg the National Master to take in."

"She is already from the National Teachers' Mansion. How to deal with it, Moon God won't talk much. Today I'm so much trouble, so I'll say goodbye."

The moon god and the disciples of the Yin-Yang family left behind the promising Ehuang. No one looked at him and removed him cleanly.

Gu Shuang took back his sword and looked at Lu Yan.

"Sister Ju Shuang, I've left this woman to you. Just say it after you finish it." Lu Yan rubbed his temples, but he couldn't be happy at all when encountering such a thing.

After saying that, he turned around and walked back to his room.

Gu Shuang drew her sword.

Ehuang sat up, looked at her enviously, straightened her back, and prepared to welcome the ending.

"Sister, like this... I'm not your obstacle..."

She gradually closed her eyes, and the last scene was that the three-pointed sword was constantly magnifying.

"Huh~"

The wind blew.

Ehuang's body fell to the ground.

Gu Shuang collected his sword and returned it to the sheath.

This scene was seen by many people.

Yi Fang sat on the roof and looked at her a little surprised.
Chapter completed!