When Li Yun saw Li Shimin, he politely treated him.

"My son is paying homage to my father!"

"Yun'er, will it be your plane in a while?" Li Shimin asked.

"Father, no, but my son will keep watching in the cab." Li Yun said.

"That's good, just have you here!"

Li Shimin breathed a sigh of relief.

Then I looked at the people below and were still doing the final inspection there.

This time it's really a big deal, don't be careless.

So, everyone is very serious.

If Li Shimin died, then the Tang Dynasty would be in trouble.

And there is no need for Li Yan to frame Li Shimin.

It is best for him to govern the Tang Dynasty at present.

"How long will it take for them?" Li Shimin asked, pointing to the person below.

"Father, they still need half an hour. Can you wait?"

"Wait, wait for an hour!"

Li Shimin said.

This is really safe and he is afraid.

So, this must be done well.

There can't be any problem.

If it were before, Li Shimin might have let the plane take off directly, but now he doesn't dare.

"Father, let's learn how to use parachutes to avoid accidents caused by failures and try to save lives."

Li Yun said so.

In the past, Li Shimin might have said that you were cursing me.

But now it won't.

Learn more, then you will have more guarantees.

Li Yun then turned on the TV.

The above is to introduce how to use parachutes.

Moreover, there was one in front of the four of them.

Li Shimin and the other two looked at it very carefully. If there is anything they don’t understand, they will ask Li Yun.

In the end, all four learned it.

And half an hour passed.

"Seventh Prince, we have finished the test, everything is fine!" Someone came up and said.

Li Shimin asked again: "It's okay, take your time, don't worry. You can check it a few more times."

"Your Majesty, you have checked ten times! Please rest assured!" the man said again.

"That's good, that's good!" Li Shimin murmured.

He also regretted it a little, but he wanted to try it out, and now he is in a difficult situation.

So, nothing was said.

"Then please put on the parachute and we are going to take off!"

Li Yun said.

So the four of them quickly started wearing it.

Cheng Yaojin also helped Li Shimin put it on.

Then the plane began to move and turned the head of the plane.

Li Shimin, Cheng Yaojin, Yuchi Jingde and Dai Zhou sat on the seat and did not dare to move.

Because they were scared after they knew that this trip would be dangerous.

But Li Shimin wanted to try this new thing again.

So, he came up with a tough bullet.

The plane started to speed up.

This speed is faster than they drive.

Through the window, Li Shimin could see the surrounding scenery flying back quickly.

This speed is at least over one hundred.

And the speed is getting faster and faster.

There is no slight decrease.

After a few minutes, the nose of the plane began to lift upwards.

The four of them felt a little panic.

What is this?

Is the plane going to overturn?

Li Yun said, "Please sit on the seat and don't leave, the plane is about to climb."

A powerful centrifugal force brought everyone up.

Through the window, you can see that the plane has already flown.

And the height is still rising.

"Now the height is five miles!"

"Now the height is ten miles!"

...

"Now the height is twenty miles!"

Until this height.

Li Yun didn't say anything more.

The plane also began to fly smoothly.

Only then did Li Shimin and others feel more comfortable.

At this time, everyone looked outside.

A large number of clouds appeared before their eyes.

Very wonderful.

Is this an airplane?

It can actually fly to a height of twenty miles.

The helicopter is only five miles high at most.

It won't work to go to a higher place.

But the plane can be twenty miles.

It also flew very smoothly.

"Okay, the plane has entered a stable flight, and everyone can leave their seats."

Because there are fewer people, they can walk on the plane without affecting the plane's flight.

Li Shimin slowly stood up.

It was really hard for him to imagine that one day he would look at the entire Tang Dynasty at an altitude of ten thousand meters.

Although he could only see the clouds, it was already shocking him.

All this was achieved by Li Yan.

This Li Yan really opened a different Tang Dynasty.

This is the huge change that Li Yan brought to his Tang Dynasty.

I believe that the future is more than that.

"Your Majesty, it turns out that this is the case at high altitude." Cheng Yaojin shouted.

He had never seen such a high altitude before, which really made him very excited.
To be continued...