Yang Yuanzheng was listening attentively to the conversation in the room, and suddenly felt that the hairs on his whole body stood up. A strong sense of crisis quickly struck, and he instinctively looked back. I saw a flickering cold waist knife slashing towards me!

Yang Yuan's pupils contracted, and it was too late to dodge. He had to move sideways and dodge the fatal blow. At this moment, a feathered arrow with a whistling sound quickly passed through the throat of the man in black, bringing a wave of blood.

The scimitar landed on the ground and was inserted diagonally on the right side of Yang Yuan. The man in black fell down and pounced on Yang Yuan.

With a "plop", the two fell on the roof outside the attic at the same time.

The people in the house quickly stood up, and two men in black quickly climbed out of the window and went straight to the roof.

After a careful search, I returned to my room.

"My lord, there is no abnormality!!"

Everyone sighed, Zhang Quan sighed and said:

"Maybe the evening breeze blew something down, so be it. Let's leave quickly, so as not to cause trouble. ”

Everyone in the house left quickly in turn, only Yuan Tan was still sitting in place with a frown. After asking Zhang Quan to go to the roof to inspect it himself, he quickly left...

In the crack of the building in the corner of the roof, Yang Yuan gritted his teeth and stood up to the man in black. In this small space, the two of them were forcibly squeezed in. Yang Yuan had to desperately push the man in black on top, and the blood in the throat of the man in black kept dripping on Yang Yuan's face. A breath of blood pervades the air...

Yang Yuan was afraid for a while, if it wasn't for this sudden dark arrow just now, he was afraid that he would have to explain here. But who will suddenly help! But it's too late to think about it.

Yang Yuan tried to move his body and forcibly moved himself out of here. At this time, he was really glad that his figure was not as burly as his eldest brother.

After a long time, Yang Yuan, who broke free, stuffed the man in black into the cracks. He looked around and quickly left.

When Yang Yuan stood in front of Yang Fang and the others, he almost scared Sun Dianchen to the ground. I don't complain that Sun Dianchen is timid, Yang Yuan at this time is bloody. His face was covered in blood, and even blood was dripping from his cheeks. In the middle of the night, it's like a ghost.

"What's going on?!"

Yang Fang pulled Yang Yuan and looked up and down.

"It's too late to elaborate, big brother, hurry up!"

The three of them no longer hesitated and left quickly...

Speaking of Xu Tian, Xu Tian has not rested for a day and a night in the warehouse of the back camp. After almost burning himself on fire, Xu Tian gave up continuing the experiment. With a black and gray face, he sat on the side. I can't see how the face is.

Xu Tian has been here since a day ago. experimented with gunpowder, but he didn't expect that no matter how he adjusted the formula. It makes no difference other than making the gunpowder burn more violently.

Xu Tian sighed secretly and slowly stood up. Just as he was about to leave, he suddenly paused.

He suddenly remembered what the backyard steward had said.

"The end will receive the fuel delivered today, in accordance with the regulations. Admiral was testing the fuel, but the fuel drum on the car suddenly fell, and Admiral and several other sergeants quickly tried to carry it back to the car, but the fuel drum suddenly exploded and burned. Several of us were swept off and then we were all out of control!! ”

How could the oil drum explode, Xu Tian touched his chin. Walking back and forth, muttering:

"Oil can also burn, and it explodes because... Oil drums!! ”

Xu Tian's eyes burst out!!

"The oil drum fell to the ground, and oil spilled through the cracks of the oil drum. Ignited by a spark in the hands of the backyard steward, then the oil in the oil drum was ignited instantly, burned inside the sealed oil drum, and then exploded!! Just like Situ Yun's alchemy furnace at the beginning, yes, it should be like this!! ”

Xu Tian hurriedly rushed out of the warehouse and said loudly:

"Someone!!"

Two guards quickly ran around, and after Xu Tian's face stopped for a moment. Quickly bowed his hand and said:

"Grand Commander!!"

"Go find a few sealed oil drums, and remember, seal them! Also, go to General Hee's to bring the sulfur and saltpeter he collected!! ”

"No!!"

The two of them left quickly...

Xu Tian rubbed his hands a little excitedly, turned around and walked into the warehouse.

After a while, the things he asked for were moved into the warehouse one by one.

Xu Tian fiddled with the things he had just moved, and turned back to the guards and said:

"Add a few more people, go to the door and keep guard, no one is allowed to approach the warehouse!!"

Soon, everyone slowly withdrew from the warehouse. Closed the door.

Xu Tian was the only one left in the warehouse, and he mixed the charcoal, sulfur, and saltpeter piled up here in a certain ratio and put them into a sealed wooden barrel. Seal the barrel with a kind of red glue.

Look at the barrel in front of you, which is filled with gunpowder and sealed. Xu Tian silently found that how to light this. He decided to give it a try like an oil drum, and he coated the sealed wooden barrel in front of him with fuel and ignited it with a torch. The barrel burned in an instant, and Xu Tian immediately left more than a dozen feet away, staring at the oil drum with good eyes.

After a violent burn, the barrel slowly turned to ashes. Hearing only the sound of "boom", the fire instantly rose several feet higher. I almost didn't set the roof on fire. But there was still no expected explosion, just a multiplication of burning.

Xu Tian frowned and fell silent, it seemed that the explosion caused by the external combustion was really just an accident. But if you want to burn from the inside, how do you ignite the gunpowder in the seal?

He thought of the flint stone, which was extremely precious in this era, and this flint was very easy to produce sparks when they collided, as long as there were sparks. Gunpowder can be easily burned. If you put the flint and gunpowder together in a sealed wooden barrel, then roll the wooden barrel. Let them collide with each other to create sparks, and in this way, there may be a chance to succeed.

Xu Tian immediately ordered someone to take the small amount of flint in the back camp, and sealed it again into a wooden barrel with more than twice as much gunpowder as before. A simple high platform was built in the warehouse, and the wooden barrels were carefully carried up the high platform. Xu Tian asked everyone to immediately exit the warehouse, took a deep breath, and pushed the barrel down...

At the same time, after a night of discussions, the three of them who returned to the Shadow Guard Mansion decided that they would report the matter immediately without further ado. But the question was who to report to, and the three of them again disagreed.

Sun Dianchen thought that he should report it to Cao Cao immediately, and he felt that this would reap more benefits.

In the end, Yang Fang unified, and the three of them immediately went to find Xu Tian.

After learning that Xu Tian was in the Houying warehouse, the three of them came to the warehouse gate non-stop. Stopped by the guard in front of the door.

"The Grand Commander has an order, no one is allowed to approach!!"

"We have something important to report, you get out of the way, otherwise you won't have enough to cut off ten heads if something happens!!"

Sun Dianchen glared and shouted loudly.

Seeing that the guards were still unmoved, Yang Fang strode forward and grabbed the guards and threw them aside. Seeing this, the rest rushed up and were easily thrown to the ground by Yang Fang. The three of them immediately walked to the warehouse.

The wooden barrel kicked down by Xu Tian quickly fell and rolled at an extremely fast speed. Just as we were about to roll to the gate. Just listen

"Boom !!!"

There was a loud bang, Xu Tian, who was standing on the high platform, and Yang Fang, who was pushing the door in, only to feel a huge push coming towards them, and the four of them were lifted away at the same time. The whole warehouse was shaken, and the dust was flying all around...