My school sweetheart

However, Xu Lang is embarrassed to ask if there are outsiders. Moreover, since he is a cousin who likes Huo QingChu, if he is too close to Huo QingChu, he is afraid to make his cousin dissatisfied. Although he has been with Xu Feng for a short time, Xu Lang has recognized him. He is sunny and open-minded. His personality is similar to his own, which is quite in line with him I'm not my brother, but after all, I'm a family.

His mother is his mother, he is him. Xu Lang believes that Xu Feng doesn't know about the things his mother does that make people and gods angry.

Back in the city, find a time to have a good chat, Xu Lang thought.

Huo QingChu sits next to him and recalls his experience in recent days. Xu Lang once again gives him too much shock. This guy seems to be casual and ignorant. He actually knows so many scientific principles. He doesn't know how his brain grows and when he learned these knowledge. Although she learned these simple chemical knowledge in junior high school, she has no idea But none of them.

Huo QingChu could not help joking and said: "Xu Lang, you know so much, don't you have used these tricks to cheat people before? It's said that there is a tradition in the rural areas of the mainland called dancing God. Some old rural women like to play witches and dance God. Don't you think so? "

Xu Lang couldn't help laughing for a while. He said in a hurry, "I'm dizzy. That's what I said."

The crowd burst into laughter.

But Xu Feng sees ChuChu elder sister and Xu Lang intimate appearance, the facial expression is strange, the embarrassed smile, but also did not think much.

The girl from country m looked at Xu Lang with adoring eyes all the time. She always wanted to ask a question. She was embarrassed to open her mouth when everyone didn't speak. Now she was angry. She quickly asked, "Xu Can I ask you a question, sir? That oil - Pan - Wash - hand

Annie's Chinese is not very standard, almost word by word.

And Wang Mingquan and other police people, although they also know that the so-called "hand washing in oil pan" must be a clever use of scientific knowledge, but they can't figure out what kind of scientific knowledge is used. They can't help but feel embarrassed and ask, "Mr. Xu, what's the truth about hand washing in oil pan? Tell us about it. "

Although Huo QingChu is very clever and intelligent, some things involve some professional scientific knowledge. For a moment, she really can't understand what's going on.

Xu Lang didn't tell the truth, but slowly told the people the scientific truth.

The secret of "washing hands in oil pan" lies in that Li Banxian added vinegar to the boiling oil pan. After hearing Xu Lang's words, many people recall a detail. When Li Banxian asked someone to add oil to the pan in the kitchen, a villager accidentally knocked over the vinegar bottle on the stove and just fell into the bottom of the pan. After he picked it up in time, half the bottle of vinegar had already flowed into the pan, and it was very difficult In fact, Li Banxian secretly touched the villager and intentionally let vinegar flow into the oil pan. However, at that time, everyone focused on the terrible thing of "washing hands in the oil pan", and did not study the problem of vinegar.

Because the proportion of vinegar is larger than that of oil, vinegar sinks at the bottom of the pot and oil floats on it. As a result, what you see and others later verified is oil, but you can't see vinegar.

After being heated, the vinegar vaporizes rapidly and passes through the oil layer in the form of gas, which makes the surface of the oil boil like a roll, accompanied by puffs of gas rising, which is very deceptive. In fact, because there is vinegar between the oil and the fire, the temperature of the oil rises, so it can only rely on vinegar to transfer the hot gas, so it will not boil so fast. What people see is just bubbles And the real oil is not hot at all.

Therefore, when Xu Lang asked Huo QingChu to reach for the oil pot to get the copper money, everyone believed that they had seen it with their own eyes. Coupled with the inertia of thinking, they thought Huo QingChu's hand would be injured. In fact, the oil on the vinegar layer was only warm. How could Xu Lang say that his hand would be injured?

What's ingenious is that Li Banxian knows that the pots in ordinary farmers' homes are old. He also deliberately chose a large pot with scale for a long time. According to his simple chemical knowledge, the component of scale is calcium carbide. When calcium carbide and vinegar are heated, a chemical reaction will occur and a large amount of carbon dioxide will be released. In this way A lot of bubbles bubbled out from the bottom of the pan, which made the pan boiling.

In fact, when Xu Lang listened to the villagers' comments, he had already thought of the answer. When Li Banxian and others took out the big pot and put it on the fire for barbecue, his sensitive sense of smell had already smelled out a lot of vinegar and oil in the pot, which further verified his guess.

In order to complete this deceptive trick, we must also pay attention to a particularly important thing, that is, to master the time and temperature, we must quickly take out the oil before the vinegar layer is heated, otherwise, it will be over.

Li Banxian naturally knew this, so he repeatedly wanted to start first, but Xu Lang defused it skillfully. He successfully let Huo QingChu start first and took out the three copper coins.

Because that time point is just right. In less than a minute, if someone reaches out his hand again, he will be scalded, because the oil layer has really begun to boil.When Huo QingChu took out the three copper coins, all the people were shocked, which means that Li Banxian must be cheating. Because a girl can do "wash her hands in oil pan", so Li Banxian had a crisis of trust. In psychological panic, he forgot to do it quickly, and he could do it.

At this time, the starting time has passed, but Xu Lang deliberately sells his personal feelings, saying that as long as he can take out the last two copper coins, he will win. In fact, it is to make him ask for trouble and taste the real oil pot.

Naturally, Li Banxian didn't dare to start again. However, when all the villagers responded to Xu Lang's call, he was in a dilemma. He had no choice but to really start. So he asked for trouble and scalded his palms into pig's feet.

After listening to Xu Lang's explanation, everyone knows the truth. Wang Mingquan takes the lead and claps hands for Xu Lang again.

"Mr. Xu, you are a man of God. If you work in our police station, I'm afraid we don't have any jobs. Ha ha." Wang Mingquan said with a smile.

Xu Lang said in a hurry: "director Wang, you can call me by my name directly in the future. You are about the same age as my father. You are Mr. Xu by mouth. It's strange."

Wang Mingquan knew that Xu Lang was a forthright man, so he didn't refuse. He immediately said, "well, Xu Lang, I'm not polite. Your Qinglong club and the peace group have deeply rooted in the Central Plains. In the future, if you can use Wang Mingquan, just open your mouth, a phone call, a message, even a message I will obey your orders unconditionally. "

Xu Lang felt strange when he said this. A police chief was so servile to himself, which made Xu Lang a little uncomfortable.

Alas, is it true that the man with ability is the master? Xu Lang thought of it in his heart.

However, Xu Lang also knows that in addition to admiring his ability, Wang Mingquan is also afraid of their Xu family's influence.

And miss Annie looked at Xu Lang foolishly. Xu Lang was hairy again. She said in her heart: don't worship brother, your sister-in-law will beat you.

Soon, the car entered the city, Wang Mingquan sent a car to send Xu Lang and others, and he was going back to the police office.

At this time, Wang Mingquan looked at Xu Feng, which seemed to remind him of something. He couldn't help exclaiming, "I can't imagine that the two young masters of the Xu family have arrived in Zhengzhou. It's a great honor for me, Wang! Let me know if you need anything in the future! "

Xu Lang, Xu Feng and others said goodbye to Wang Mingquan with a smile. Then, they came to the headquarters building of Qinglong club.

When Ma Qilin saw Xu Lang coming back, he saw that Huo QingChu was really with Xu Lang, but he didn't think much about it. He said to Xu Lang in a hurry, "husband, your wife flew back to Jiangdu with her mother-in-law this morning."

Xu Lang was obviously stunned, "ah? Why? Why don't you wait for me? "

Ma Qilin looked at Huo QingChu and said with a quick smile, "yuruo said that her company still has a lot of work to do and Qiqi needs to be taken care of, so she left."

When Xu Feng heard Ma Qilin's words, he was in a mess and couldn't help saying, "wait a minute, are you my sister-in-law?"

Annie and George, however, did not pay attention to their boring conversations, and seemed to be looking around.

"P, s: 5 more complete, please spend! Thank you for the flower support of my friend "Xu shengzhuo", thank you for the reward of 100 yuan from my friend "xxcccc", thank you for all the book friends who put in flowers, thank you, I continue to work hard and try my best to conceive more wonderful plots, roar! 」」