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"At present, through the method of urine accumulation in human and animal urine, initial results have been achieved. The resulting saltpeter only needs to be crushed with plant ash, sifted, and washed in hot water in a large iron pot. After the liquid is slowly filtered and refined, the eye color gradually fades from reddish-brown to reddish-brown, and after cooling and crystallization, you can obtain saltpeter with extremely high purity and can be directly made into gunpowder without purification."

Outside the dangerous mountain city, in a barracks in the school field, Niu Hua was reporting to Li Rusong on his recent achievements.

"Well, the general only needs to order all the people to urinate in a few places, and you can send someone to collect it. How is flintlock flint produced? Hearing that the problem of saltpeter purification was finally solved, Li Rusong raised his eyebrows and then asked.

"It's much better than what I planned before, and now I have made 1,200 qualified flintlock guns, and the projectiles and gunpowder that have been dispensed have also been prepared, which is enough for the consumption of 10,000 troops for three months" took out an account book from his arms, and after a little calculation and thought, Niu Hua said unhurriedly.

"Well, there will be no worries about the army going out to Hadabu. Old Niu, you are here tonight for a night, and then you will go back to the city tomorrow" Hearing this, Li Rusong couldn't help but be overjoyed, stood up and patted Niu Hua's shoulder and said.

At this time, it was already the second day of the twelfth month of December, and there were less than three days before the dispatch of troops to the Hada Department, and Niu Hua was responsible for supervising the construction of the weapons, armor, cotton jackets, gunpowder, and grain and grass that He Xinyin was responsible for raising, and Niu Hua personally escorted them to Li Rusong's camp outside the city this afternoon.

The gates of the dangerous mountains must be closed punctually every afternoon when it is almost dark, and those who violate them must be beheaded. Unless they had a token issued by Li Rusong or Li Chengliang himself, no one had the right to ask the defenders of the dangerous mountain to open the city gate at night, and they could only go back and forth through the hanging baskets on the city wall.

And elite troops like the Liaodong Iron Cavalry and the Chiyan Legion, their station is on the school field outside the dangerous mountain city, which is at the corner of each other with the dangerous mountain and the surrounding two military villages, and the place is spacious enough and has a water source, which is a good place for the garrison.

Considering the cold winter weather in Liaodong before, all the barracks were built with brick and tile structures, and the beds in each barracks were large bunks, and there were eleven people: a first-class commander, and ten soldiers under his command. Every day, there are special logistics soldiers who are responsible for lighting fires and charcoal in each barracks after the drill, so that when each soldier returns to the barracks, the house is warm.

"Major General! Falcon Shadow Blade Chen Cheng, Lord Chen sent someone to the camp, saying that there was something important to report! Suddenly, there was a report from the guards outside the house, and Li Rusong was stunned.

"Hurry up and let this brother in and get some soju!" Li Rusong knew very well that as the spy leader in charge of the intelligence and espionage mission of the dangerous mountain, Chen Chengda sent someone over at night, and there must be something important.

After a while, the monk Grinqin personally walked in with a man of short stature and a beautiful face, about twenty years old:

"Under the command of Lord Chen Cheng, Guan Tian pays a visit to the young general" Although he was already shivering all over his body and his lips were blue, this falcon's spy suddenly flashed a touch of fanaticism in his eyes when he saw Li Rusong, and he knelt down and saluted meticulously.

"Brother, get up, take a sip of wine to warm up, and tell me what happened," Li Rusong said with a kind smile on his face, personally helped the spy up, handed him a pot of soju, and said.

"Major General Xie" Guan Tian's eyes flashed with a touch of crystal, and he hurriedly picked up the wine jug, drank all the spirits inside, moved his numb body a little and said:

"Major General, this afternoon our Falcon brothers found seven or eight men dressed as merchants near the armory in the city, walking around with their heads poked around, looking sneaky and suspicious."

"And the brothers who guard the armory, these merchants are very interested in the armory, and have bribed them several times to go in and have a look. Lord Chen Cheng felt that something was wrong with these people, and ordered me and a few others to secretly monitor these people, and it turned out that this afternoon, when Lord Niu escorted supplies to the barracks. That group of merchants actually took advantage of the fact that the soldiers were busy inspecting the vehicles, and wanted to sneak into the armory, and we took them all down on the spot" said this, Guan Tian's face had a proud smile, and he and his four brothers finally didn't embarrass Lord Chen.

"There is such a thing! Who are these guys? Eyebrows furrowed slightly, Li Rusong thought for a while and asked.

"They are all Mongolian Tatars, but the leader is a Han Chinese, who keeps saying that he is a childless old mother who sits down to protect the Dharma, and asks to see the young general" Guan Tian was already standing aside at this time, and when he heard Li Rusong's question, he said respectfully.

"Shhh Hearing this, Li Rusong and Niu Hua's faces changed at the same time, and they glanced at each other, both of them seeing surprise in each other's eyes.

"Old Niu, eighty percent is the subordinate of the incorruptible and shameless Wang Balamb" Li Rusong's tone was very gloomy, full of undisguised strong murderous aura.

"Cut! Except for this grandson who doesn't even want his ancestors, who else can there be! Niu Hua also put away the cynical appearance of the hippie smile and said viciously.

In the 33rd year of Jiajing, Zhao Quan, the head of the White Lotus Sect in the Yanbei region, and others led the people to illegally cross the border and defect to the Fengzhou area of Hetao. Soon after escaping to Mongolia, this group of shameless and even forgotten their ancestors took refuge in the Mongolian Altan tribe under the leadership of Zhao Quan.

After that, in order to please Alta, Zhao Quan used his Han identity and familiarity with the military deployment of the Ming army on the border to assist Alta in invading the Ming Dynasty many times, helping the Mongol Tatars to kill and rob their compatriots.

And Zhao Quan himself was even more valued by the Mongols, and built Bansheng City in Fengzhou Beach, Mongolia, as an important stronghold for Tilta to build advanced weapons and equipment, and at the same time to grow grain for the Mongols and enslave the Han compatriots.

And the Han people under Zhao Quanji's command have long stopped treating themselves as Han people, and wantonly oppressed and humiliated the Han compatriots who were plundered by the Mongols, and they are out-and-out Han women. Li Rusong had long hated this person, but he didn't expect this guy to take the initiative to provoke him.

"Zhao Quan, the grandson, is not ashamed to be a dog for the Mongolians. He also kept secretly sending people to lure the people near Jimen and trick them into going to Bansheng City, so as to strengthen his own power," Niu Hua said fiercely with a cold light in his eyes.

Niu Hua was originally a talent in Jiangnan, but because of a fight with the son of a local gentry, he was dismissed by the gentleman by his means. Therefore, he lost hope in the imperial examination, and switched to He Xinyin's sect to learn agriculture and military industry, and once followed He Xinyin to travel to Jimen, and knew everything about Zhao Quan, the general manager of the White Lotus Sect.

"Monk King! Arrange to bring fifty guards back to the city with me, and you will take my waist card to open the city gate first!" After thinking for a while, Li Rusong decided to go back to the city to personally interrogate these details.

"Old Niu, you go back with me, follow me to see what kind of heart and liver these guys have!" Sneering and asking Guan Tian to follow the monk Greenqin back to the city first, Li Rusong patted Niu Hua on the shoulder and said.

"I don't dare to ask for it! Grandpa Niu wants to see, I spent a lot of money from the palace to get the ten tortures of the Ming Dynasty, how many can they stand on these guys? Niu Hua said with a smile, but his words were full of Senhan's murderous aura.

At that moment, Li Rusong did not delay much, ordered Cheng Yi to take charge of military affairs, and returned to Dangerous Mountain City with fifty Liaodong iron cavalry guards.

"Brother, those Tartars and Han people are all imprisoned by me in the dungeon in the backyard of the General's Mansion, and Han Yankai doesn't know about this matter for the time being" At the gate of the city, Chen Cheng saw Li Rusong, and hurriedly stepped forward and whispered.

"Temporarily block all news, take me to interrogate these guys immediately, and then all of them will be silenced, and the corpses will be handed over to Han Yankai!" Li Rusong did not hesitate to issue a series of orders, and then took Chen Cheng to the general's mansion.

"Looks like our armory has to change places, the target here is too big!" Niu Hua on the side whispered, this time the Mongolian Tatars were obviously going to the ordnance of the dangerous mountain army, even if they were all killed, it was difficult to guarantee that Han Yankai would not be suspicious of the ordnance.

"Well, although this guy has a financial connection with us, he killed the prince because of interests. But it's really not our internal people, so we have to guard against it. After destroying the Hada Ministry, you secretly take people to transfer all the eye-catching things to the military village south of the dangerous mountain, and I will allocate funds to strengthen and build the military village" Li Rusong frowned tightly and arranged in a low voice.

"Damn the Mongolian finesse! You'd better provide some valuable information, otherwise the master will definitely make your life worse than death! Just as Li Rusong was thinking about how to interrogate these meticulous works with a hideous face, a group of people suddenly rushed out in front of him.

These people are all dressed as merchants, one is tall and strong, and one of the guys in the center is carrying a ** bag, which looks like there is a person inside!

"MD, it's Tartar again! Kill them all, and save the people in the sacks! Li Rusong roared angrily and took the lead in rushing towards these people.

Fifty Liaodong iron knights behind him, without saying a word, picked up their sabers, ten people followed Li Rusong to kill them, and the rest of them scattered and surrounded these people.

"Not good! It's the barbarians of the Ming Dynasty, everyone! At this time, the other party also discovered Li Rusong, and the big man in the center shouted loudly in Mongolian.

"Ahh Li Rusong was like an arrow off the string, and the horse quickly entered the crowd, and with a wave of the sharp horse chopping knife, two Tartar heads moved on the spot.

The ten Liaodong Iron Knights who rushed behind suddenly rolled their saddles and dismounted at the moment when their horses broke into the Tartar crowd. Wielding his saber into the crowd of Tartars, he hacked five Tartars to death in an instant.

The remaining four Tartars, where did they still have the heart to fight with Li Rusong and others at this time, and hurriedly escorted the leader to seize the horse and break through.

It's a pity that at this time, the remaining forty Liaodong iron knights have surrounded them, and a rain of arrows has shot through, except for the leader, the remaining three Tartars have fallen to the ground like hedgehogs.

"Dog Tartar! Rest assured immediately, otherwise the master will kill you! Staring at the blood-red eyes, Li Rusong stared at the Tatar leader tightly and said.