Datang: I was exposed by Princess Changle

"I... I believe it too!" Li Shimin changed the subject, and wisely chose to believe Lin Xuan directly.

Just give yourself a step down.

Regarding this, Lin Xuan looked at Li Shimin mockingly.

He thought Li Shimin would swear something, but he didn't expect to admit it so soon!

"Eh?"

"Father, don't you believe Brother Xuan? Why do you believe it again?"

"Didn't you always teach us that to be a man is to keep your word, and you are not allowed to go back on your word?!"

Li Lizhi said to Li Shimin innocently.

"I... I..."

Li Shimin was so embarrassed when he heard the words, he wanted to dig a hole and get in.

"Hahaha……"

Changsun Wuji and Empress Changsun couldn't help laughing when they saw this.

Li Lizhi's innocent and righteous questioning appearance and Li Shimin's awkward and ignorant appearance that day are simply too funny!

The room was filled with laughter and laughter for a moment, and the atmosphere seemed very relaxed and joyful.

Feeling the joyful and warm atmosphere, the embarrassment in Li Shimin's heart gradually turned into warmth and joy.

Since Li Shimin ascended the throne and proclaimed himself emperor after the Xuanwumen Incident, he has rarely enjoyed the warmth and happiness of this kind of family.

"Brother Xuan, how are you going to make ice in this scorching summer?"

After laughing and laughing, Li Lizhi asked Lin Xuan curiously.

Although under the careful teaching of Empress Changsun, Li Lizhi has grown into a slim and talented woman.

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Chapter 311 I will teach you a good lesson today!

But she was still ignorant of such a magical thing as making ice in summer, and was very curious.

"Come on, you all listen carefully."

"Today I will give you a good lesson."

"Teach you the methods and principles of how to make ice."

Lin Xuan said calmly when he heard the words, preparing to give them a chemistry class.

Changsun Wuji, Empress Changsun and Li Lizhi immediately pricked up their ears when they heard the words, listening carefully, and even Li Shimin looked at Lin Xuan seriously.

All four of them were curious about this.

What kind of magical method can produce ice cubes in this hot summer day against common sense?

Seeing this, Lin Xuan gave a dry cough and cleared his throat.

"Cough cough..."

"The method of making ice is actually very simple."

"Only two materials are needed."

"One is water, and the other is calcium nitrate, what you commonly call saltpeter."

"As far as I know, water freezes when it is cold, and saltpeter absorbs a lot of heat when it dissolves in water."

"So, you only need to dissolve a large amount of saltpeter in water, let the saltpeter absorb the heat in the water, and the water will become very cold, and it will freeze!"

Lin Xuan slowly talked about the method of making ice in summer, and told them the chemistry knowledge he had learned in high school.

"I see!"

"Brother Xuan, your knowledge is really profound!"

"You even know such a miraculous thing!"

"I heard that saltpeter is used by Taoist priests to refine elixir. I didn't expect it to be made into ice!"

After listening to Lin Xuan's detailed explanation, Chang Le suddenly realized.

Being smart, she immediately understood the principle of ice making. Her big beautiful eyes looked at Lin Xuan, full of admiration and admiration!

As soon as this word comes out.

Lin Xuan's expression turned cold when he heard the words, and he said a little indignantly: "Using saltpeter to refine elixir is purely harmful!"

"Saltpeter is a heavy metal, and it must not be eaten by the human body!"

"Once ingested too much, it will seriously damage people's health and even endanger their lives!"

"You must never take this poisonous pill in the future."

Speaking of this elixir, Lin Xuan hurriedly told them.

As a modern person who believes in science, Lin Xuan still dismisses the pills refined by ancient Taoist priests.

He knew that alchemists in ancient times liked to add some heavy metals to their medicines.

People may be fine after eating for a while.

But after a long time, it will definitely cause serious damage to the body after long-term use, and even endanger life.

It is estimated that the reason why Qin Shihuang died so early may be because he was too superstitious about the elixir of life, and he took too much of these elixir with excessive heavy metals.

How could there be an immortality elixir in this world? !

Birth, old age, sickness and death are human nature, and everything is the law of natural development.

Some drugs can delay aging and death.

"Yeah, Lizhi knows it!"

"I won't take pills. What's more, I have such a powerful invincible doctor like Brother Xuan by my side, so I don't need to take any pills!"

Feeling Lin Xuan's care and entrustment, Li Lizhi was deeply moved immediately, and nodded happily in response.