The defense of small settlements mainly relied on the cultivators.

The defense of large settlements was carried out by the national army.

At this time, there were still five military regions left in Shenzhou, which were stationed in five capitals in the southeast, northwest, and northwest, each with a radius of thousands of miles, with each other and relying on each other, with Chang'an as the core, forming a concentric circle, each with 2 million troops stationed.

The army was divided into dragon teeth, tiger teeth, wolf teeth, and leopard teeth, as well as a large number of ordinary soldiers.

The role of ordinary soldiers is also very important, because the main force of the monster beast siege is the low-level demon beast and the beast without demonization, and the country has built a number of positions, arranged special guns, cannons, and can kill the demon beast below the foundation. Demon beasts that exceeded the foundation building period were dealt with by cultivators, including people from folk sects

In the spring of 2150, Qin Di summoned the heads of the five major military regions to discuss matters in the Spring and Autumn Palace of Kunlun Mountain, as the "chief national division".

The five generals, together with the head of the General Armament Department, Lieutenant General Zhang Liang, were escorted by the troops to Yuzhu Peak.

On the way, Zhang Liang couldn't help but complain: "Why did this great master summon us? His martial arts are so high, if he wants to see us, why don't you go to Chang'an in person?

Accompanying him to the west was Li He, the general of Zhongjing, who said: "The great master of the great country is a great wanderer, like an idle cloud and a wild crane, how can he be like us, he is so busy every day that his feet do not touch the ground! He is also inconsiderate of our hard work!"

Zhang Liangdao, Minister of Equipment, said: "Last month, we produced 30,000 large-caliber alloy stunners, which were welcomed by all units after they were issued, and many people urged to speed up the production of more guns. But this alloy is too difficult to make! It requires heavy metals such as gold and silver, as well as more than a dozen rare earth elements, which makes me anxious. Nowadays, many mines have been lost, Shandong Gold, Zijin Mining, these places have been abandoned, where do you let me find more gold? Fortunately, we have defended Baiyun Obo in Baotou, Minmetals rare earth in Jiangxi, and there is no shortage of rare earth elements......

Li He said: "I heard that this alloy formula was provided by the great master more than a hundred years ago!

Zhang Liang shook his head and sighed: "We have invited a lot of scientists and conducted a lot of research, but we have not broken through this formula! It is really strange to say, where do you say the great master got the formula?"

"God knows, this man has the power of ghosts and gods. He is the only Yuanying True Monarch in the world, if he is willing to make a move, he can sweep all the big demons in the Asian continent, but for some reason, he rarely takes the initiative to make a move. ”

"Have you seen the recent 'Demon Hunting Hero List'? In the front, in addition to Gu Ruhu, a peerless national warrior, there are also Du Rong and Du Lan, they are all from the Spring and Autumn Palace, and these people have come out to hunt demon beasts, and the great masters are hiding in Kunlun Mountain leisurely. ”

"You're not aware of the latest rankings. Just yesterday afternoon, there was another incident, it is a little strange to say, there are three big demons, leading tens of thousands of demon beasts and beasts to attack Lop Nur, the offensive was very fierce at the beginning, fortunately Lop Nur arranged a large defensive array, and the demon beasts did not attack. Later, guess what, Gu Rumei sat in the big formation, played a guqin song, and then Gina came out of the battle alone, swinging her sword and killing the three-headed demon, it is said that the three-headed demon did not react, as if she had become demented! Afterwards, Gina jumped to the second place on the list of demon hunting heroes! Squeezed Du Rong and Du Lan to the third or fourth place!

"Ah, Gina killed the three-headed demon by herself, does she have that much strength?"

"Someone reacted, it was Gu Rumei's piano sound, which played a restraining role!"

"I don't understand, can the sound of the piano also kill demons?"

"Gu Rumei is Qin Di's apprentice, and she also has unpredictable means. ”

"I heard she's been celibate all along?"

"What's wrong with being celibate? Many powerful cultivators don't want to get married and have children. Now that we have embarked on the path of cultivating truth, the meaning of life is different. ”

The two chatted all the way, and when they arrived at the foot of Yuzhu Peak, they met the other four generals.

They were dragged halfway up the mountain, entered the Spring and Autumn Palace, and saw Qin Di.

At this time, Qin Di was still in his twenties in appearance, much younger than these six generals!

The six of them were all emotional, knowing that the great master was 250 years old, and it was more than enough to be their grandfather, so they respectfully respected him, and said, "I have seen the great teacher." ”

Qin Di nodded and said, "I invited you here to show you something." I have researched a new type of spirit cannon that can kill the Great Demon of the Jindan Period with one shot. ”

All six of them looked surprised.

"What is a spirit cannon, and how is it different from a normal cannon?"

"Where is the cannon? Have you made a model?"

Qin Di said: "Please come with me, the spirit cannon is placed on the cliff on the west side." ”

The crowd followed him out of the Spring and Autumn Palace, and went diagonally up along a mountain road to a raised platform, where a disciple was guarding.

There is a cannon on the platform, shining silver, the cannon body is covered with fine patterns, it looks like a wave, layer by layer, it looks very beautiful.

Qin Di said: "There are many kinds of spirit cannons, and this is just a low-level spirit cannon, which can bombard and kill the Jindan Great Demon." It needs to be shelled with special shells. ”

What he didn't say was that if it was a high-level spirit cannon, or an immortal-level cannon, it didn't need a cannonball, it was extremely powerful, and it could kill immortals, but if it wanted to be excited, it must have immortal stones.

The crowd watched wide-eyed as he experimented with the cannon.

Qin Di asked people to push a big iron ball from the side, about a foot in diameter, which was also painted with strange patterns, he put the big iron ball into the cannon chamber, and then in a groove, put ten spirit stones, and said: "The range of the spirit cannon is 200 kilometers, after hitting it, you can't see it when you stand here." I'm not going to go that far this time, so I'm going to find a nearer mountain, a hill twenty miles away, and I'll wait for you to send someone over to take a look." ”

Then, with the flick of the button, the cannon shook violently, emitting a white light!

The crowd did not see the cannon being discharged, but they did see white smoke rising from the rock wall of the hill in the distance.

While holding binoculars and watching, they instructed their men to go to the hill to check the effect of the shell strike.

An hour later, the officer under his command reported: "The shell went 100 meters deep into the mountain, forming a cave with a diameter of two meters!"

Everyone was shocked: "How can a one-foot-diameter cannonball hit a cave with a diameter of two meters?

Qin Di said with a smile: "The key to the spirit cannon is the runes on the cannon body and cannonballs, which are also related to the materials used. I used silver cannons and iron bullets, of which silver cannons were mainly silver, accounting for 57%, plus other metals, and did not use precious metals such as gold, and iron bullets were mainly iron, accounting for 62%, plus other metals, also did not use gold. ”

Someone said: "It turned out that the rune made a meritorious service." Great Master, is it good to draw such runes?"

Qin Di said: "You send people over, at least the foundation monks, I am responsible for teaching them to draw such a talisman." ”

Zhang Liang bowed down and said, "Please also provide the recipe for the silver cannon iron bullet." ”

Qin Di nodded: "No problem, I'm ready." ”