Draw a detailed structure of the paraglider before DIY, so as not to do it directly and then drop some parts.

Paragliding is a high-risk sport, and every year, many people fall from the sky and die every year.

For the next three days, in addition to eating and sleeping, Song An kept himself locked in the house to draw the structural diagram of the paraglider and the process and method of gunpowder purification.

"Xiao An, what are you drawing?"

Seeing that Song An had been locked in the study for the past two days, the father wondered, so he came to see what his son was doing, and as soon as he entered the door, he saw the paragliding structure drawing on paper drawn by Song An.

"A kind of parachute designed by a child on a whim."

"Parachutes?"

"It's an umbrella that can take us into the sky. When we arrive, we can fly over the mansion of the four thieves in Bianshang Jinggao by parachute, drop the ignited earth-shattering thunder, and blow up their mansion, so it's no wonder that the four thieves don't die. ”

Daddy's face sank: "People are not birds, how can they fly to the sky?" Moreover, this earth-shattering thunder detonating at close range can really barely hurt people, and if it is said that the courtyard of the house will be blown up, it is simply unspeakable! ”

Song An didn't bother to explain to his father, and he couldn't explain it anyway.

"Father, just look at it. I'll fly to the sky to see you in a month at most! And this earth-shaking thunder, within two months I promise to build a sky-shaking thunder that can blow up the house! ”

Dad didn't say anything more, just looked him up and down for half a year with a strange expression, and then turned to leave.

Song An picked up the notebook and continued to record the process of purifying and pairing sulfur, charcoal and saltpeter.

Although he was familiar with these processes, he still planned to write them down and do them step by step when the time came. After all, if this thing is a little careless, it is very likely that it will be over, but it can't stand sloppiness.

He patronized and took notes, not noticing that the divine doctor An Daoquan and his father had been standing beside him for a while.

Although he had an extremely keen sense of hearing and feeling, it was in his own home, so he completely left his guard behind.

An Daoquan stared at Song An's face for a long time, frowned, stroked his beard, and shook his head at Song Jiang.

"Xiao An, the divine doctor has something to ask you."

Daddy's sudden words startled Song An.

"What advice does Uncle Divine Doctor have?"

"Brother Xiao An, do you remember the last time I cut your pulse?" An Daoquan asked.

Lao Tzu has only been here for ten days, and he is not sick or sick, when will you give Lao Tzu a pulse?

"Little nephew doesn't remember."

An Daoquan and his father glanced at each other and continued to ask, "Then little Brother An, do you remember when you had a serious illness last year?" ”

"I don't remember."

"Oh, it's okay, Brother An, old man farewell."

Song An inexplicably sent his father and An Daoquan away, returned to the table and continued to take his notes.

Father Song Jiang was panicked, and as soon as he left the door of Song An's small courtyard, he pulled An Daoquan's hand: "Divine doctor, how come Xiao An forgot about the fact that you cut his pulse ten days ago, and the fact that he was bedridden for several days on the thirtieth day of the Chinese New Year's Eve last year?" ”

"According to the description of Brother Xiao An, he said that he wanted to fly into the sky and wanted to make a thunderstorm to blow up the house of the four thieves, coupled with the inquiry just now, Lao Yu deduced that he was crazy, brother don't panic, Lao Yu prescribed a few calming medicines for Xiao Brother An."

"Okay, how can you go crazy?"

Seeing that Song Jiang was a little suspicious, An Daoquan said in a big way: "The name of the old god doctor is not an empty statement, brother can rest assured!" ”

"There is a miracle doctor."

……

The seventy-first chair of Shuibo Liangshan - Hou Jian, nicknamed Gibbon.

Job: Tailor.

This man is not only good at needlework, but also good at guns.

In that year, Song Jiang was sentenced to death because of the anti-poem inscription of Xunyang Building, and was denounced by the small official Huang Wenbing. When he was escorted to the execution ground, Chao Gai was handsome and a good man from Liangshan came to the rescue. He was working at Huang Wenbing's house, so he killed Huang Wenbing's family with Xue Yong, a sick insect, and followed the Liangshan army back to Liangshan. The position is "the sixth of the sixteenth superintendent of the Internal Affairs Department and the commander of the weaving battalion to make up the cheongsam jacket", responsible for the production of flags and military uniforms.

The apricot yellow banner outside the Zhongyi Hall was made by him.

Song An found him and showed him the rice paper with the paragliding structure drawing.

Hou Jian took the drawings and looked at them diagonally for a long time, full of doubts.

"Brother Xiaoan, what is this?"

"A kite-like plaything designed by my nephew."

He didn't dare to say that he wanted to use this thing to fly into the sky with him, otherwise Hou Jian would definitely have to tell his father about it. Then his "madness" is even more serious.

He heard the conversation between Daddy and An Daoquan outside the hospital yesterday afternoon, and in the evening, the minion who served him brought a bowl of medicinal soup.

"Can Uncle Hou make it?"

"As long as you have the drawings, you just want to make the heavenly clothes worn by the gods, and I can make them for you by gibbon Hou Jian!" Hou Jian said in a big way.

"Ask Uncle Hou to use two layers of heavy brocade and paste the dense seams in the way of insoles, and use the hemp rope of the cart for the rope."

It stands to reason that the paraglider should be made of special nylon, and the surface of the fabric should be coated with an anti-tear coating, and the parachute line should be made of "Kevlar", a very strong bulletproof clothing. However, the Great Song Dynasty did not have these chemical textile fabrics, so they could only settle for it.

Heavy brocade is the strongest and densest cloth in ancient times, and it is sewn together like a piece of sole with two layers of brushing and then containing the soles, and it is definitely not a problem to say that it is strong, and it is not a problem to go for a ride. The hemp rope is used to pull the cart and carry the coffin, let alone hang a person of one or two hundred catties, not to mention that Song An, who is one meter eighty-three, is only one hundred and thirty catties.

"This work is a bit cumbersome, I can find a few more brothers to do it together, Brother Xiaoan, you can take it in five days."

"There's Uncle Laohou."

Song An then found Tang Long, the money leopard.

Tang Long ranked 88th among the 100 singles and eight generals. Born as a blacksmith, after going up to the mountain, he served as the "Ninth of the Sixteen Superintendents of the Internal Affairs Department and the Commander of the Weapons Battalion to Build Weapons and Iron Armor", specializing in the creation of weapons and armor of the army.

Song An asked him for a few earth-shattering thunder shells.

After thanking Tang Long, Song An asked for five catties of sulfur, five catties of charcoal, and fifty catties of saltpeter from Ling Zhen.

Ling Zhen is nicknamed "Thunder in the Sky", and Zhongyi Hall sits on the fifty-second chair, which is an auxiliary star for the earth. He was originally a general of the Great Song Dynasty, good at making firearms, and after going up the mountain, he served as "the commander of the 16th Supervisor of the Internal Affairs Department and the 10th Artillery Battalion".

According to the script, Song An began the purification work.

Saltpeter can be purified using the crystallization method, while sulfur can be purified using the sublimation method. In the 21st century, these two methods could not be simpler, but the ancients were not very proficient, so the saltpeter and sulfur they made were full of impurities. Even the salt, which is eaten for three meals a day, is full of many harmful substances.

Let's get saltpeter first.

Make a few large buckets, pour saltpeter, pour in water that can completely dissolve saltpeter, dissolve, and then filter the solution with a single layer of cotton cloth into another basin to remove impurities; After the temperature drops, it will naturally cool and crystallize.

So many times dissolve, filter, cool the crystallization, and then dissolve...... It's just that the cotton cloth used for filtration has been replaced with double, triple, and quadruple layers......

After doing this again and again, Song An finally purified nine catties and eight taels from fifty catties of saltpeter.

Fortunately, with the help of Hua Fengchun, Xu Sheng, Hu Yanyu, and Song Ping, otherwise they would not be able to do it for a week on their own.

These four people are all descendants of the heroes of Liangshan, and they are all about the same age as Song An. Hua Fengchun is the son of Hua Rong, Xu Sheng is the son of Xu Ning, the golden gunner, Hu Yanyu is the son of Hu Yanzhuo, the double whip, and Song Ping is the son of Song Qing, the younger brother of the iron fan, and the cousin of Song An.

The sublimation method of sulfur requires tools to collect gas, and the Great Song Dynasty has these, only to do it yourself.

As usual, the drawings were drawn, looking for the money leopard Tang Long.

The two iron pots were tightly fastened together from mouth to mouth, and the top one drilled a hole in the buttocks and connected it to an upside-down iron bucket with an iron pipe, and the mouth of the iron bucket was wrapped in several layers of cotton cloth.

To purify the sulfur, you need to heat the raw sulfur to 200 degrees Celsius to melt it, and it can only boil and smoke at 400 degrees.

When the sulfur is boiled, yellow smoke comes out of the pipes, flows into the drums, and then comes out through the layers of cotton netting at the bottom of the pipes.

After the sulfur is boiled, it is left for a period of time, and most of the smoke in the iron drum cannot flow out due to the cotton cloth barrier, and will condense on the wall of the barrel, scrape it off and boil it again, and boil it again after collection......

This was repeated five times, and it took a whole day to purify two taels or four coins from five catties of sulfur.

Although there are impurities such as water, iron and copper in charcoal, it is relatively easy to purify.