After Li Chengqian hurried back to the East Palace excitedly, he hurried to the Tai Chi hall without changing his clothes.

As soon as he entered the door, Li Chengqian saw Li Shimin sitting in front of the book case with one hand on his forehead, thinking about something.

Li Chengqian quietly dismissed all the palace maids and eunuchs, and then personally dismissed all the guards outside the door. Only then did he carefully come to Li Shimin.

Li Shimin has some doubts.

But after seeing the silence action made by Li Chengqian, he patiently wanted to see what Li Chengqian wanted to do.

I saw Li Chengqian write down the two words of strange scriptures on the paper. I couldn't help but shrink Li Shimin's pupils.

"Come with me!"

Li Shimin burst into a shocking momentum.

He got up and said in a deep voice.

Then he seemed uneasy, and then ordered, "little noble son!"

"The maidservant is here!"

"No one is allowed to enter the imperial study without my permission. Those who violate the order will be killed! I have business with the crown prince!"

"Yes!"

After giving orders, Li Shimin gently knocked on a night pearl inlaid behind the Dragon chair twice, then twisted it, and knocked the night pearl out. Then, at this time, a dark and invisible hole appeared on the floor under the Dragon chair!

Li Shimin took out two oil lamps from the bookshelf, handed one to Li Chengqian, and took the other by himself. He carefully went down the vertical secret road.

The secret road is not wide and can only accommodate one person to go down at the same time.

When they walked about 15 steps, Li Shimin LIT an oil lamp on the wall, then pressed a protrusion on the side of the oil lamp, and the secret road above his head was covered again.

So far, Li Shimin didn't say a word, while Li Chengqian didn't say a word.

Li Chengqian was shocked, but he was relieved after thinking about it.

Who doesn't have a little secret?

Not to mention the father?

They walked along the cold steps for almost a cup of tea and came to a great underground palace.

The decoration in the underground palace is extremely luxurious, but there is no dust on it. Obviously, Li Shimin often comes to the underground palace, and Li Chengqian is shocked when he carefully sweeps the dense bookshelves in the underground palace.

The books above are all forbidden books of the Tang Dynasty, and even allusions of the previous dynasty, such as Taoist Scriptures and the authentic manuscripts of Confucius saints. There are many here.

Li Chengqian didn't feel strange about this. On the contrary, it would be really strange if his father didn't have this place

"Chengqian, tell me carefully, what's the matter with this wonderful Sutra?"

Li Shimin asked, sitting on a soft cave.

He waved his hand and motioned to Chengqian to sit down.

Li Chengqian then said, "father, Zhang Feng promised to take us as disciples today. He also said that he could make Chumo a heavy cavalry that can be broken, make Chang sun Chong a warrior who can walk thousands of miles and take the head of the general among millions of troops, and let Wei Shuyu practice the art of assassination that comes without shadow and goes without trace!"

"Even Du Gou can let him master the arithmetic skills that can control the wealth of the world! As for children!"

Li Chengqian paused, then said with hot eyes: "he said that he would let the child master the wonderful Sutra that even Mr. Yuan Tiangang had never mastered!"

"I learned from his words that he was able to control the layout of the countries around the Tang Dynasty before. Even if it was because of the book of strange scriptures, I hurried back. On the one hand, brother Zhang Feng asked us to prepare for the master's ceremony. On the other hand, I wanted to tell my father about it. After all, we, five surnames and seven hopes, or foreigners are looking for the strange scriptures!"

Is there really a Scripture?

Li Shimin never disdains these things.

But at this time, he couldn't help feeling a little confused.

He never believed that there were demons, ghosts and immortals in the world, but at this time, he was learning about the miraculous scriptures, and how did Zhang Feng know about the secret that only the royal family could know.

Is he really an old monster who has practiced for 5000 years?

But, thinking about him, he thinks it's impossible!

If he really has such great ability, can he not know his identity?

But now, how to explain?

Li Shimin couldn't figure it out, but he said Zhang Feng was an old monster who had lived for 5000 years. He firmly didn't believe it. As for this strange Scripture, what was said in ancient rumors, does he really exist?

Li Shimin doesn't believe it.

But Zhang Feng's ability, from the art of making salt, to the strange cooking method and wine making method, as well as what he said, some things being implemented in the Tang Dynasty are unprecedented and will never come again!

How do you explain these?

Li Shimin couldn't figure it out.

I can't figure it out.

"Alas!"

Li Shimin had a headache.

Waving his hand, he motioned to Li Chengqian and said, "don't mention it. Have you warned them that if you don't keep your mouth tight, there will be consequences?"

Li Shimin's eyes burst out a sense of obliteration.

This obliteration made Li Chengqian feel deeply afraid.

"The child has warned them about this. I think they won't dare to be careless in this matter!"

Li Shimin was relieved when he heard the speech.

"That's good! I don't want to recreate the evil of killing, but if this matter is spread, Datang will surely lead to disaster! Remember, it's better to kill a thousand wrong than let it spread!"

Li Chengqian got up quickly.

"I understand!"

"Go down and remember to learn from brother Zhang Feng! Every night, I want you to hear, think and learn everything that day!"

"My son and Minister obey my orders!"