A quarter of an hour later, two yamen officers brought things in and placed them in the hall.

The three adults scanned their eyes and then turned to look at Xu Qi'an.

Chen Fu Yin said in a deep voice, "everything you want is here. Please give me a satisfactory reply."

His attitude has changed.

In a quarter of an hour, the official of the fourth grade had racked his brains for a long time. He had to admit that Xu Qi'an's inference was very reasonable, but there were still many doubts, such as the fact that tax money fell into the river.

He couldn't understand the mystery.

"If the grass people help you solve this case, can you write a letter to the sage to absolve the Xu family from the responsibility?"

Dafeng attaches great importance to the inheritance of father and son, and the son can take the place of the father and also perform meritorious deeds for the father.

"Naturally." The head of Chen Fu chin.

Xu Qi'an nodded and squatted down in front of the utensils. The props in front of him were candles, salt, porcelain cups and wire.

What he wants to do is very simple, high school chemistry knowledge: extraction of metal sodium.

In ancient times, it was impossible to extract it. There were two difficulties: the melting point of electricity and sodium chloride.

But in this world, Xu Qian knows that there is a profession that can do this.

The sixth product: alchemist!

Alchemists belong to a household name in Dafeng. Their inventions and creations have long been integrated into the lives of ordinary people.

Xu Qian is not sure that the explosion of tax silver must be metal sodium. This is not important. The important thing is to open up a way of thinking to explain the phenomenon of tax silver explosion.

In the process of solving a case, bold assumption and rigorous reasoning are the necessary work in the early stage. The last thing is to verify, to collect evidence.

In his previous life, he once encountered a murder case that he still remembers. The criminal police worked all night, opened their brain holes according to clues, and speculated on the process of several cases. On this basis, they went to collect evidence.

Then they all overturned and reasoned again.

Tax silver may not be metal sodium, in short, alchemists can do this.

That's enough.

For several adults to find the right direction, this is what he has to do.

When the direction is right, you can go to the investigation, and it's not difficult to find out the behind the scenes.

If you are still struggling in the thought of making trouble with monsters, the case will never be solved. Even if the case is solved in the future, he has already sent you away, thousands of miles away!

He melted the salt with water, stirred it, covered it in the mouth of the cup, and poured in the salt water slowly.

After filtering, grill the cup on the candle and stir it with bamboo sticks.

Soon, the salt water in the cup is evaporated, and the crystal precipitated inside is sodium chloride.

The essence is to further purify the salt.

Chen Fu Yin, a middle-aged man, and a young girl in a yellow skirt with a high face value all stood around and watched attentively.

Xu Qi'an raised his head and grinned at the girl in the yellow skirt: "you are the disciple of Si Tian Jian."

He noticed the Feng Shui dish at his waist. No one could use it except the disciple of the sky warden.

The girl in the yellow skirt let out a "hum" and said with a smile, "the master is the chief of heaven."

The delicate and beautiful oval face is like a shelled egg, white and flawless.

It doesn't matter if you are a disciple of the prison. Xu Qi'an said softly, "please melt these crystals for me."

The melting point of sodium chloride is about 800 ℃.

Yellow skirt girl shriveled small mouth: "fire control is Alchemist's ability, I'm just a feng shui master."

"But my master gave me a magic weapon." She took off the Feng Shui plate at her waist. Her green jade finger was playing with it a few times. The air engine input and the word "fire" lit up.

"Back up!"

Xu Qi'an immediately retreated. At the next moment, the bright tongue of fire spewed out and submerged the porcelain cup.

"Stop!" Xu Qian immediately called to stop, then quickly inserted two wires into the porcelain cup and asked: "power on... No, it's Leifa! Pay attention to the control voltage... Well, this step is very difficult and may fail many times. "

As she turned the Feng Shui dish, her green jade finger lit up the word "Lei". Several arcs flashed through the void and touched the wire.

The molten sodium chloride reacts violently.

"Stop!"

Xu Qi'an held his breath and went to the mouth of the cup to see that a piece of silver bright metal was formed, and the edge was part of the crystal and impurities that had not yet been transformed.

It was a one-time success. The voltage was just right. Xu Qian was surprised.

Electrolysis method to make metal sodium, the voltage is about 6-15 V, he prepared for repeated failures.

I didn't expect that the emperor of Europe was attached to the body. It was once.

Chen Fu Yin and the middle-aged people couldn't wait to look around. In the cup, there was a lump of silver metal. At first glance, it was quite similar to silver.

Chen Fu Yin's eyes shrank and his heart was shocked.Li Yuchun clenched his fist and looked at the silver metal. It seemed that there was lightning in his mind, splitting all the fog.

"Please see, some adults," Xu Qi'an poured out the sodium metal, wrapped it in rice paper and weighed it in his hand:

"this thing is much lighter than silver, but its appearance is extremely similar. If someone uses this thing as silver, can it be confused with the real? A few adults can also weigh it. "

as like as two peas, he turned the metal sodium to Chen Fu Yin. At this point, the metallic color gradually turned dark and almost identical with silver.

The middle-aged man took it and weighed it. His eyes were shining. He said in a voice: "it's really lighter. If it's this thing, it's reasonable. Miss Caiwei, try it. "

The yellow skirt girl took it, weighed it, and then looked at Xu Qian strangely: "you, are you an alchemist?"

No, I'm not. I'm just a chemical porter.

After Chen Fu Yin was surprised, he suddenly shook his head and said in a deep voice, "no, no, even if the silver is replaced like this. What's the matter with the explosion? If there were no monsters hidden in the river, how could the fake silver explode in the water? "

Xu Qian didn't answer. He reached for the metal sodium, went to the desk and threw it into the pen washing jar.

The blazing fire lit up and the smoke billowed.

"Boom!"

The metal sodium reacts violently in the water, and the pen washing cylinder cracks.

"This, this..." Chen Fu Yin was shocked.

"This fake silver will explode when it meets water. This side can explain why there is such a violent explosion after the silver falls into the water." Xu Qi'an explained.

The middle-aged man murmured: "from the beginning, we were misled. Through the explosion and the evil wind, the behind the scenes agents made us think that it was the evil things, and the focus of the investigation was on tracking and searching."

"No wonder Qin Tianjian's technique of looking at Qi can't observe monsters."

Xu Qi'an added: "after the tax money fell into the water, the soldiers only recovered more than 1000 liang of silver. If they guessed correctly, the silver was spread on the top to hide people's eyes and ears."

It's perfect. Everything's right.

"Xu Qian!" The middle-aged man's eyes are full of praise

His brow suddenly wrinkled and solidified at Xu Qian's crooked neckline. Li Yuchun then patted his shoulder to help him pull his neckline neatly.

Xu Qi'an is flattered. This adult appreciates him so much.

Chen Fu Yin frowned and said, "since the silver is fake, where is the real silver?"

Hearing the speech, the girl in the yellow skirt also showed a dignified color: "when the tax money goes out of the warehouse and goes to Beijing, they change hands at different levels. If they want to ask for a crime, a large number of officials will have to go to prison. It is as difficult as looking for a needle in a haystack to recover the money. And it's beyond our jurisdiction. I have to report it to your majesty. "

Chen Fu Yin nodded. That's what he meant.

The middle-aged man had a different opinion, and his voice was low: "tax money was escorted all the way to Beijing, and changed hands at different levels. If it was fake, it would have been discovered long ago. The only possibility is that it was switched recently. "

Chen Fu Yin's eyes brightened, which greatly reduced the scope of the investigation.

"Come on, prepare the sedan chair. Prepare the sedan chair quickly. I want to travel." Chen Fu Yin rushed out of the inner hall.

Middle aged men followed.

"Don't forget the promise to Cao'an