When the siege drum was about to beat, the gates of Jian'an City were slowly opening.

Cui Jinghao, the lord of Jian'an City, led the officials in the city, as well as the generals in the army, and slowly walked out of the gate of Jian'an City.

The crown prince Li Ke had already set up a position, and when he saw that the city gate was wide open, and the officials in the city walked out of the city one by one, he finally breathed a sigh of relief.

The victory in the first battle, and the defeat of the army without a fight, made him ambitious and extremely happy.

Before coming to the prince's luan, Cui Jinghao took the lead in kneeling on the ground, and then everyone also knelt on the ground one by one.

"Cui Jinghao, the lord of Jian'an City, led the officials of Jian'an City to welcome His Royal Highness the Prince of the Tang Dynasty, and went to Jian'an City to instruct the people of Jian'an City."

"Cui Jinghao, you can be sympathetic to the lives of the people in the city, open the city to welcome the Tang Dynasty, and avoid the battle between the two soldiers and the destruction ......of lives, this prince is very comforted."

The crown prince Li Ke said some words on the scene, so he ordered Cui Jinghao to lead the team and let the Tang army enter the city to receive Jian'an City.

The crown prince Li Ke appeased the people in the city, and did not want to bring the people to Chang'an, and appointed Cui Jinghao as the assassin of Jian'an on the spot, so that everyone could continue to live in Jian'an City with peace of mind and be the people of the Tang Dynasty.

As for the other officials, as well as the generals in the army, of course, it is impossible that there will be no changes, and the officials will be reappointed as officials in other prefectures and counties, and the soldiers and generals in the army will also be disorganized, mixed into the defenders of Liaodong Province, and scattered among the cities.

Niu Jinda and Li Coast, after arriving in Goguryeo by warship, swept all the way, fought hundreds of times, captured dozens of cities, it can be said that they are invincible and invincible, so that the Goguryeo king Gaozang, the powerful minister Da Mo is fragmented, Gai Suwen, and he can't help but tremble, and he is afraid of the Tang Dynasty like a tiger, and there is still a mind there, and he sent troops to aid the cities in Liaodong.

Because of the limited number of soldiers and horses, it was impossible to send troops to defend the city, so Yongai Suwen transferred all the soldiers and horses of Goguryeo to the Pyongyang area.

For Goguryeo, Pyongyang is the royal city of Goguryeo, the largest city in Goguryeo, and the most populous city, so Pyongyang must not afford to lose.

If even the city of Pyongyang is lost, then Goguryeo will have no value in existing.

The purpose of intimidation and deterrence had been achieved, and Goguryeo's national strength was further weakened.

After taking Jian'an City, some of the remaining small mountain cities in Liaodong also surrendered to the Tang Dynasty one after another.

After the pacification of Liaodong, the British prince Li Tao and the crown prince Li Ke did not plan to continue to cross the Yalu River and attack Pyongyang City, because the time had not yet come, so the imperial court did not plan to destroy Goguryeo in one fell swoop.

This time he came to Liaodong, and the crown prince Li Luo also had a private task, to find a way to bring Li Mingda, the princess of Jinyang, back to the palace.

In a academy in Liaozhou City, Li Mingda, the princess of Jinyang, dressed as a very ordinary girl, with long hair and a shawl, was holding a book and was seriously teaching the students.

"Students, do you know why the apples on the apple tree fall by themselves?"

After Princess Jinyang asked, several classmates raised their hands.

"This female classmate, do you know if you raise your hand? Then it's up to you to tell everyone, why do the apples fall from the apple tree? Princess Jinyang smiled and asked a girl who raised her hand.

"Because the apple is ripe, the apple will fall on its own, teacher, am I right?" The little girl was not afraid, but replied generously.

"Is there anyone else who raised their hand and has a different answer?" Princess Jinyang didn't tell the little girl first, was her answer right or wrong? Instead, he continued to ask other students if there were any other different answers.

The classmate who had just raised his hand shook his head and put his hand down.

Obviously, their answer is the same, whether it is an apple or other fruit, when it is ripe, it will not fall to the ground?

In the eyes of all students, such an answer is natural and should not be wrong.

"The answer is true, but not all right, when the apple is ripe, so it falls on the ground.

Have you ever wondered why apples must fall when they are ripe? Why doesn't it fly up?

Why can birds fly in the air, and we people climb trees, we must be careful of falling.

That's what we're going to teach today, gravity.

What is gravity called? The ground under our feet has a gravitational pull on everything, and no matter what we throw into the sky, eventually it will still fall to the ground, and that's because of gravity.

To give a simple example, if we take two stones, one large and one small, and let go at the same time from a certain height, which stone do you think will fall to the ground first? ”

"Teacher! It must have been the small stones that landed first. ”

"That's not right! It should be that two stones hit the ground at the same time. ”

"The small stone is light, the wrapped stone is heavy, and it must be the light stone that falls first."

……

"You don't have to argue anymore, after class, you can do an experiment, don't you know the result?" Princess Jinyang was still smiling, stopping everyone's argument.

After the bell rang for the end of class, the students came to the playground of the college and began to experiment with great interest after saying goodbye to the teacher.

The results of the experiment surprised the students! It turned out to be a much larger stone, and it fell to the ground first, although the difference was very small, but after several tests, each time the big stone landed first.

At this time, the crown prince Li Ke appeared in front of Li Mingda, the princess of Jinyang.

"The royal sister has seen the crown prince and the royal brother!" Princess Jinyang saw the sudden appearance of the crown prince Li Ke, and hurriedly saluted.

"Imperial sister! You have really changed a lot, if it weren't for Liaozhou City, the imperial brother wouldn't dare to recognize you. ”

Although the crown prince Li Ke and Princess Jinyang were not born to the same mother, they also cared about and loved this sister very much, and the two went to Kangding City together, and they got along day and night in Tangding City. Compared with other princesses, the relationship is deeper.

"The crown prince and brother have also changed a lot! has become more confident than before, and more like the temperament of his father. ”

Princess Jinyang was telling the truth, not flattering the crown prince Li Ke.

Prince Li Ke also saw this, a person's eyes will not deceive people, so after listening to it, he was quite happy in his heart.

That shows that his father chose himself to be the prince, which is a very wise choice, and only he can inherit his father's wish and make the Tang Dynasty stronger.

"You, the little imperial sister back then, have really grown up now, and you know how to pick good things to say, but before coming to Liaodong this time, the father and mother were handed over to the imperial brother, a very important task, the imperial sister should have guessed it, what is this task that the imperial brother said, right?" Prince Li Ke smiled slightly, looked at Princess Jinyang and said.

"Father and mother, do they just can't wait for the royal sister to go back to the palace?" Princess Jinyang lowered her face and said unhappily.

"Who made the royal sister the precious son in the hearts of the father and the queen mother? So you still obediently accept your fate and follow the royal brother back to the palace! lest after the royal brother goes back, there is no way to communicate with his father and mother. ”

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