Ru Yue Shu Yun Feng Wen Wan

Several people came in and wanted to bow down when they stood in the hall.

Qi Changyun: "No need to be polite!"

Yi Fengbai didn't look at the person he had taken advantage of, but looked at He Ru who was sitting next to him with a complicated look in his eyes.

He Ru stood up and bowed to the Grand Tutor as a student.

Lan Lian: "Stop being polite, come on Qin, tell me what's going on!"

Fu Ning muttered to himself: What's going on? What else could it be? An introduction!

Grand Tutor: "Your Majesty, is there anything you must say here?"

Except for the Grand Tutor, everyone else knew the truth.

He Ru: "Is there anything wrong with talking here?"

Qi Changyun: "It's safe here for now!"

As long as it's safe, that's good.

Yi Fengbai: "If you have something to say, please tell me now! Delay will lead to unexpected events."

The pressure was put on Qi Changyun.

But He Ru thought that the pressure was on herself.

Before Qi Changyun could speak, he asked, "Is it safe to make a little noise here?"

Yi Fengbai: "How big of a commotion?"

He Ru: "The sound of a flare being released."

The Grand Tutor hesitated and looked at Qi Changyun: "This..."

Qi Changyun: "Let's get started!"

He Ru took out several purses hanging around her waist.

Qi Changyun: Just ask why you carry so many purses.

He Ru opened the black purse and found a bamboo tube inside.

Looking at Yi Fengbai who was standing at the edge, he said, "Abai, bring a lamp over here."

He took the lamp and walked to the incense burner in the center: "Don't come over here! Stay away."

Several people retreated.

"Back off again, behind the chair."

Qi Changyun: "What about you?"

He Ru: "Don't worry."

Seeing several people walking behind the chairs, Qi Changyun wanted to stand to the side, but was held tightly by several people and surrounded in the middle.

Fortunately, the fuse was long enough.

He Ru placed the bamboo tube into the unlit incense burner, picked up the fuse, and stepped back a few steps until he reached the end.

Light it up, then quickly step back.

When he retreated to his chair.

It exploded with a "bang!"

The incense burner was blown into pieces, with smoke and dust flying everywhere. The power was so great that the fragments even flew in front of He Ru.

Only after the smoke and dust settled a little did they dare to come out from behind the chairs.

The Grand Tutor's hands trembled: "This, this, this?"

He Ru: "This is called gunpowder. It is an improvement on flares, but with a different ratio."

Lan Lian clapped his hands and said, "Yes, if we can make flares, why can't we make gunpowder?"

Qi Changyun was still a little uncertain: "What is the use of this gunpowder?"

He Ru: "Making explosives. Explosives can be used to dig roads through mountains, and can even be used on battlefields."

When several people heard the answers they were thinking of, their pupils dilated.

Excited.

Grand Master: "Good! Good! Very good!"

Fu Ning lowered his voice: "Is there an exact formula?"

He Ru nodded, and everyone became even more excited.

"I can write about it now."

As he spoke, he walked to the chair and was about to sit on it, but then he thought of something and his butt, which was about to fall on the chair, turned around, moved to the side, and squatted to write.

Several people stood aside.

After a while, it was written and handed to someone, but I didn't know to whom.

The Grand Tutor took it, and Fu Ning leaned over to look at it, but Lan Lian and Yi Fengbai tactfully didn't look at it.

Qi Changyun took it and handed it to Yi Fengbai: "Third brother, I'll leave it to you now. Can you do it?"

Yi Fengbai: I deliberately didn’t look at it, and you deliberately gave it to me?

Seeing that he didn't take it, Qi Changyun stretched out his hand.

Finally it fell into Yi Fengbai's hands.

He Ru opened another purse.

Inside is the raw coal that his caravan found while traveling all over the country.

A black thing appeared in front of everyone.

Fu Ning: "What is this?"

He Ru: "Coal, a kind of fuel."

Lan Lian: "Can the fuel be burned like firewood?"

He Ru nodded, picked up the lamp he had just lit, lit it, and several people subconsciously stepped back.

He Ru: ...

"Cover your mouth and nose with a handkerchief."

Several people did as they were told.

It ignited and a huge flame burst out.

Burning.

It was just a small piece, but it burned for a long time.

"After burning, this coal can reach a higher temperature. It can be used to make better porcelain, and it can also be used to smelt iron to make stronger weapons."

Several people's eyes lit up when they heard this.

He Ru reminded: "But this coal has too many impurities in it. Burning it for a long time will cause poisoning."

A few people moved back and back, and saw He Ru still standing there, so they pulled her back as well.

He Ru: ...

Thank you!

Although, it is a bit dirty and messy here, and I'm afraid someone will come here soon.

He Ru didn't plan to say anything more.

Fu Ning: "Then do you have any method to remove the impurities in here?"

He Ru: "I'll try again."

Several people were so shocked that they were speechless for a moment, and the hall became quiet.

Not a moment.

A voice came from outside the palace:

"Princess Chang'an has arrived!"

Everyone was in a panic, not knowing what they were doing, and ended up giving up.

Qi Changyun sat on the chair.

Several people went down to the main hall and stood there.

Princess Chang'an entered the palace and asked, "Ah! What's going on? Why is it like this?"

When he appeared in sight, everyone saluted.

"Your humble servant, humble servant, greets Princess Chang'an! May Princess Chang'an be well and safe!"

"Be flat!"

Princess Chang'an bowed in front of the Grand Tutor before paying her respects to Qi Changyun.

"Changan, get up quickly."

"Royal brother, what's going on here?"

Qi Changyun touched his nose and made up an excuse.

Lan Lian: "We just got into a fight here on a whim and accidentally hit the incense burner, and this is what happened."

Qin Qianan sat down and teased: "You guys are really in a good mood!"

"So is the Grand Master. Why are you letting them mess around?"

Grand Master: "Haha, they suddenly started sparring, and before I could react, it was like this!"

Qin Qianan's eyes fell on He Ru: "Royal brother, who is this?"

He Ru lowered his head and pretended to be a quail.

"This is a new friend. She said she wanted to visit the palace, so she begged Patriarch Lan to bring her in. We just met too."

Lan Lian: "That's right."

Qin Qianan said to He Ru: "You, raise your head."

He Ru looked up, glanced at her face, and then lowered his eyes.

"What's your name?"

He Ru: "Princess, my surname is He and my name is Ru."

"He Ru, that's a nice name. What do you want to see in the palace? How about I take you to see it?"

He Ru: Not very good.

"Thank you for your kind words, Princess Chang'an. I am a humble woman, so I will not trouble you with your concern."

Princess Chang'an said sympathetically, "Oh! That's not the case. Since he's my brother's friend, he's also my friend. What's the problem with him showing his friends around?"

He Ru glanced at Qi Changyun's face imperceptibly, and only answered when she saw him nod slightly.

"Then I'll have to trouble Princess Chang'an."

Princess Chang'an stood up and said, "In that case, my Royal Brother, I will not disturb your sparring. I will take my leave."

Qi Changyun: "Go ahead! When you're done shopping, let me know to send her out."

"Royal brother, do you still not trust me? Could I be lost by someone else?"

Qi Changyun: It’s because it’s you that I don’t believe it.

"Miss He, let's go!"