Black powder gunpowder is one of the four great inventions of ancient China. Gunpowder is now known as black powder. It is made by mixing potassium nitrate, sulfur powder and charcoal powder according to a certain ratio (potassium nitrate 75%, sulfur 10%, charcoal 15%). When black powder is ignited, a chemical reaction occurs, and the oxygen released by potassium nitrate causes charcoal and sulfur to burn violently, instantly producing a large amount of heat and nitrogen, carbon dioxide and other gases. Due to the rapid expansion of the volume, the pressure increased violently, and an explosion occurred. It is estimated that for every 4 grams of black powder burned on fire, it can produce 280 liters of gas, and the volume can expand nearly 10,000 times. Because there is a K2S solid produced during the explosion, there is often a lot of smoke coming out, hence the name black powder.

And potassium nitrate in it, it is an important raw material for black powder. To prepare potassium nitrate, nitrate soil and plant ash can be used as raw materials. After the organic matter in the soil decays, nitric acid is formed by the action of nitrite bacteria and nitric acid bacteria. Nitrate combines with potassium, sodium, magnesium and other ions in the soil to form nitrate.

That's how the nitrates in nitrate come from. Nitrate soil is generally stored in toilets, pig and cattle pen houses, old walls in courtyards, cliff edges, caves, and ground that is not easily washed by rainwater. The nitrate soil is moist, not easy to dry, and turns slightly purple-red after being exposed to the sun. A good nitrate will spark when placed on red-hot charcoal.

These are not difficult to do, Fan Ming has already extracted it, but this sulfur is not easy to find, when he was in Sauron Mountain, Fan Ming had sent people out to find this brittle yellow ore, used to extract sulfur, but searched the whole mountain, did not see.

When I came to Viruga, I heard that there was a hot spring in the mountains and forests on the edge of the city. Then there must be brimstone in the ground!

"Look. They're back!" Lem came to the hall with two drenched men, including Karl, the captain of the Vanmin's guard.

No way, Carl is one of the few people here who knows how to water. He can only be allowed to go.

"Your Majesty, is this what you want?" said Karl, pulling out a few stones from the basket behind his back.

Fan Ming took the stone, it was some pale yellow brittle crystals, Fan Ming was overjoyed! This is the property of sulfur!"Haha! That's it! Now I can finally realize my plan!" Fan Ming laughed as he played with the stone.

"Lem, find a few more people to accompany Carl to the hot springs, and collect such stones! Find me a few more clay pots! No one is allowed to come in and disturb me today!" said Fanming, holding the stone and walking towards the castle.

"What the hell does His Majesty the Emperor want, what do you want these stones for?" Karl asked, puzzled.

"Why do you care so much! Hurry up and find two people who are going with me! Get more stones and come back! What Your Majesty wants to do must be useful. You won't understand!" Lem scolded Carl, and after Carl left, he looked back at Fan Ming's back: "What kind of wind is the boss smoking?"

"Hey, Where's Lem!" As soon as he walked out of the castle, Lyme saw Resarit running towards him: "What's the matter?

"This is so important! I must go see him!" said Resarit, anxiously.

"Tell me about it. If it's really important, I'll go with you again!"

"Well, actually, just yesterday," Resarit whispered in Lyme's ear. After talking for a while, Lem fell into deep thought.

"Now you can go in and see Your Majesty!" Ressarit was already a little anxious.

"Haha! I've got a way! The two of us can do it! Why bother Your Majesty! Come here. Listen to me" The two leaned together, another burst of spies.

After a long moment, the two looked up at each other and laughed

"I'm back, my lord," cried out to the bishop as soon as he entered.

"What did they say?" asked the bishop, seeing the servant returning.

"It's done!" They have agreed to your terms, so don't worry, Lord Bishop, uh, no, it should be the Cardinal!, hahaha," said the servant, as if a dream had come true, "Yes, yes, as long as I can become a cardinal." This Bishop of Viruga is yours!hahahaha!" Dima couldn't bear to hear that the plan had succeeded. Thinking that the glory and wealth will not be exhausted in the future, he laughed out loud for a while.

"Ah, thank you, Your Excellency," said the servant, excitedly, "My lord, the twenty men who came with me are already waiting outside the city, ready to enter the city. The servant whispered to the bishop.

"Well, I'm going to get them in!" After saying that, the bishop paced a few laps, then stopped and suddenly thought of a solution: "You like this, take twenty monastic robes from me, and follow me out of the city!"

"Yes, Your Excellency!" replied the servant.

So, the bishop was driving his servant in a carriage, and the two of them went out of the city to Viruga leisurely, and the soldiers guarding the city gate at the north gate saw a carriage coming from a distance, and it was the bishop's servant who drove the car, so they knew who was in the car: "Yo! This is the bishop going out of the city!" "Haha, I'm going to pick up a few monks, and those are some of my friends, to discuss the doctrine!" Hearing the question of the soldiers at the city gate, the bishop immediately came out uncharacteristically to sell a good one.

"Oh! Oh, then, the Bishop, please, don't delay your business!" Then the soldier said to the citizens who were queuing up at the gate to leave the city, "Get out of the way, and let the Bishop pass first!"

Amid the disdain of the people, the bishop's carriage slowly left the city, "Hoo scared me to death, come out and hurry up again" The bishop saw that he had left the city gate, gasped, and urged the servants to hurry.

At this time, the bishop didn't notice that a pair of eyes were already firmly fixed on him, and under a black hooded cloak on the city tower, a pair of eyes emitted bursts of poisonous light.

"My lord, he has already left the city! Just the two of them, saying that they are going to bring a few magic sticks back to study the doctrine!" The guard, who had been flattering to the bishop just now, reported to the people under the cloak with a stern face.

"Hmm. Keep watching, let me know in advance when he comes back!"

"It's my lord!"

"Lord Bishop, hmph" Under the cold gaze, there was another cold and frighteningly cold smile of the current Veruga. They are no longer as convinced of the Holy Bishop as they used to be, and although they are still religious, they believe more in their Emperor, their Holy Son, Fan Ming. On the contrary, because of the events in the town square last time, he was even more contemptuous of the bad habits of those who engaged in clerical work.

Outside the city, a group of big men hid in the woods deep in the woods, "Hey, hey, a carriage is coming!" I saw a carriage approaching from afar, and a leader loudly reminded his companions to be on guard.

"That's the servant!yes, it's him!" he said, and went to meet him.

"How's that? How are we going to get into the city?" asked the servant with two short knives stuck in his waist.

"You are the warriors of Duke Mateas! Thank you for coming! you will get rid of an ungodly and despicable man for the Lord!" said the bishop as he got out of the carriage and said to the group, and it was so obligatory and true. It can be seen that the skin is thick. Non-cannons can't be blown off.

"Oh! This is the Bishop! I am Baron Peck, who is under Duke Mattas, and these are the most elite knights beside the Duke! We are all doing for the Lord, so what should we do?" The leading Baron Peck saw that it was the Bishop himself, and he, who had been loyal to the Lord and the Church since he was a child, immediately respected the Bishop.

"Oh, you are faithful believers of the Lord, come, change all the clothes in the car, and we will go into the city like this," Bishop Dima told them about the plan of the process. When they were done changing their clothes, a carriage. Twenty priests on horseback dressed as big men marched on the way they came.

"I'm back, my lord," cried out to the bishop as soon as he entered.

"What did they say?" asked the bishop, seeing the servant returning.

"Yes, yes, as long as I can become a cardinal, this Bishop of Veruga is yours!" Dima couldn't bear to hear the success of the plan, and he laughed out loud when he thought that he would not be able to enjoy the glory and wealth in the future.

"Ah, thank you, Your Excellency," said the servant, excitedly, "My lord, the twenty men who came with me are already waiting outside the city, ready to enter the city. The servant whispered to the bishop.

"Well, I'm going to get them in!" After saying that, the bishop paced a few laps, then stopped and suddenly thought of a solution: "You like this, take twenty monastic robes from me, and follow me out of the city!"

"Yes, Your Excellency!" replied the servant.

So, the bishop was driving his servant in a carriage, and the two of them went out of the city to Viruga leisurely, and the soldiers guarding the city gate at the north gate saw a carriage coming from a distance, and it was the bishop's servant who drove the car, so they knew who was in the car: "Yo! This is the bishop going out of the city!" "Haha, I'm going to pick up a few monks, and those are some of my friends, to discuss the doctrine!" Hearing the question of the soldiers at the city gate, the bishop immediately came out uncharacteristically to sell a good one.

"Oh! Oh, then, the Bishop, please, don't delay your business!" Then the soldier said to the citizens who were queuing up at the gate to leave the city, "Get out of the way, and let the Bishop pass first!"

Amid the disdain of the people, the bishop's carriage slowly left the city, "Hoo scared me to death, come out and hurry up again" The bishop saw that he had left the city gate, gasped, and urged the servants to hurry.

At this time, the bishop didn't notice that a pair of eyes were already firmly fixed on him, and under a black hooded cloak on the city tower, a pair of eyes emitted bursts of poisonous light.

"My lord, he has already left the city! Just the two of them, saying that they are going to bring a few magic sticks back to study the doctrine!" The guard, who had been flattering to the bishop just now, reported to the people under the cloak with a stern face.

"Well, that's a good job! Keep watching, and let me know in advance when he comes back!"

"It's my lord!"

"Lord Bishop! Hmph" Under the gloomy gaze, there was another frighteningly cold smile The people of Viruga are no longer as convinced of the Holy Bishop as before, although they are still religious, they believe more in their Emperor, their Holy Son, Fan Ming. On the contrary, because of the events in the town square last time, he was even more contemptuous of the bad habits of those who engaged in clerical work.

Outside the city, in the grove, "Hey, there's a carriage coming!" A group of big men hid in the depths of the woods, and saw a carriage approaching from a distance, and a leader loudly reminded his companions to be on guard.

"That's the servant!yes, it's him!" he said, and went to meet him.

"How are you here, how are we going to get into the city?" asked the leading man, with two short knives at his waist, to the servant.

"You are the warriors of Duke Mateas! Thank you for coming! You will get rid of an ungodly and despicable man for the Lord!" said the bishop as he got out of the carriage and said to the group, saying that it was so obligatory and true that it was so thick-skinned that it could not be blown off without a cannon.

"Oh! This is the Bishop! I am Baron Peck, who is under Duke Mattas, and these are the most elite knights beside the Duke! We are all doing for the Lord, so what should we do?" The leading Baron Peck saw that it was the Bishop himself, and he, who had been loyal to the Lord and the Church since he was a child, immediately respected the Bishop.

"Oh, you are faithful believers of the Lord! Come, change all the clothes in the chariot, and we will go into the city like this," Bishop Dima told them about the plan of the process, and when they had finished their dressing, a carriage and twenty men of priesthood on horseback set out for the way they came. (To be continued......)