Wang Xiaotian rushed out of the room, jumped directly from the fence, went to the warehouse on the negative seventh floor to get the gas mask, and then ran all the way back.

First bring it to Cao Lianyou, then to the little monkey and the big black dog, and finally bring it yourself. As soon as he put on his gas mask, Wu Ling'er ran over, and when he saw the appearance of the two of them, he was startled, and blurted out: "Where did the pig demon come from!"

Wang Xiaotian hurriedly said, "Auntie, don't make trouble." We wear gas masks to keep out the smell. ”

When Wu Ling'er heard this, she quickly stretched out her hand and said, "Give me one." ”

Wang Xiaotian immediately gave her one and gave her how to wear it, and then the three of them split up to hunt the invading long tongue.

Due to the barrier of the sea of fire, there are not many long tongues in this invasion, only eight, but they are all very strong, at least the fifth level high-level. There are two of them who are level 6 intermediate!

Under Wu Ling'er's care, Cao Lianyu killed the two weakest. Wu Ling'er killed two sixth-level mid-tier. The remaining four were all killed by Wang Xiaotian.

After killing the long tongue, Wang Xiaotian didn't care about refining the Force, and shouted, "I'll go and send a gas mask to Master!" and ran to the door.

As soon as he reached the doorway, the door opened. Shen Shuming covered his mouth and nose with his sleeves, and rushed in with a strong smell of burning. He was followed by three strong men, all of whom covered their mouths and noses with their sleeves, and their faces were flushed.

Wang Xiaotian didn't care to speak, and hurriedly handed them the gas masks.

Shen Shuming was startled when he saw Wang Xiaotian's appearance. As soon as he was about to speak, he saw Wang Xiaotian making a masked movement.

But they didn't understand what Wang Xiaotian's action meant, and they brushed "Huh?"

Wang Xiaotian hurriedly shouted: "Put it on quickly, it can isolate the smell." ”

As soon as the four of them heard this, they immediately came over, and one by one snatched the gas masks. But I don't know how to wear it, and I can't get the essentials after a long time. can only squeeze his eyebrows at Wang Xiaotian.

Wang Xiaotian had no choice but to walk over and use Shen Shuming as a model to demonstrate to them how to put on gas masks.

They were clumsily wearing gas masks, and the door of the cave opened again, and Zhou Ziheng and Hu Minghui walked in quickly.

When the two of them saw the appearance of these people, they were obviously shocked.

Wang Xiaotian immediately shouted: "Master, this is a gas mask, which can isolate the smell." I'll get it for you. ”

With that, he turned and sprinted a few steps, jumping off the fence.

Hu Minghui watched Wang Xiaotian's back disappear, and said with a smile: "Ling Gaozu is really a rare genius. How did he know there was something in the tower?"

Zhou Ziheng thought about it for a while, and said very cautiously: "The idea of the inferior has always been wild, and he may know it by mistake." ”

Hu Minghui said: "Is it a mistake? This is really impossible. I've not been to the tower once or twice, and I'm afraid to say that I know everything about it, but I've traveled everywhere I can open the door. However, such gas masks have never been found. ”

Zhou Ziheng thought for a while and said, "Sect Master Hu, let's open the skylight and say something, could it be that you are suspicious of the inferior disciples?"

Hu Minghui shook his head, raised his hand to lay down the enchantment, and said, "I know very well about the matter of the innate Xuan Vein. You don't have to worry about that. ”

Zhou Ziheng breathed a sigh of relief and said, "The inferior disciple is indeed an innate Xuan vein. ”

Hu Minghui nodded and said, "I know." However, even if it is an innate Xuan Vein, it is impossible to know what is in this tower. This involves the authority of the fence system. ”

Zhou Ziheng pondered for a moment and said, "The inferior disciple has obtained the fourth-level authority. ”

Hu Minghui nodded lightly and said, "That's what Ms. Xuanying said, improve the operating procedures of rapid-fire guns, right? So, do you want to use Level 4 clearance to build a lot of things in the processing plant in the tower?"

Zhou Ziheng looked at Hu Minghui in surprise. He didn't expect that Hu Minghui would see through his thoughts.

Hu Minghui smiled and said, "I advise you not to do this." ”

Zhou Ziheng was puzzled and said, "Why? Using the factory in the tower, as long as you provide raw materials, or even as long as there are ores, you can produce powerful weapons, isn't this extremely beneficial to the Chu State?"

Hu Minghui said: "A long time ago, a senior had already done it. Otherwise, where do you think the artillery outside came from?"

Zhou Ziheng couldn't close his mouth in surprise, it turned out that the artillery outside was the masterpiece of the Tari Processing Factory!

Hu Minghui saw through his thoughts and said, "It's not all made in the tower. Only a handful of samples came from the tower. ”

"After these samples were made, they were sent to the top of the army by that senior. The military boss was overjoyed and immediately arranged for researchers to spend more than ten years dismantling, mapping, and imitating, and successfully copied it. However, it is only now that I have found out that I have taken a big detour. ”

Zhou Ziheng was puzzled and said, "What detour?"

Hu Minghui said: "Back then, before copying this large-caliber artillery, the army was suffering from insufficient firepower and was developing the Force artillery, but there was no progress. ”

Zhou Ziheng nodded. He could think of the study of the Force artillery, why there was no progress. Because, the power of the Force weapon depends on the user. The higher the user's Force level, the more Force input to the weapon, and the stronger the weapon.

Therefore, if the Force Artillery wants to be powerful enough, it must be operated by a strong cultivator.

But in that case, the existence of the Force artillery will not be of much significance.

This is because the cultivators who are strong and powerful are basically high-ranking officers. For example, Lin Shaotang, who is at the peak of the sixth-level Force Division, has the rank of general and the position of commander of the Northern Border Army.

How is it possible to let such a general, the commander of the Northern Border Guards, operate the Force artillery? It is better to give him a powerful Force spear.

Hu Minghui continued: "At this time, artillery that did not rely on the operator's Force level appeared, and the original research was naturally stopped. All the research efforts were put on the imitation of artillery. ”

Zhou Ziheng said: "This is normal." What are you talking about?"

Hu Minghui said: "More than 300 years have passed since the successful imitation of this artillery. According to the laws of scientific and technological development in the old era, many more powerful and technologically advanced alternatives should have been studied a long time ago. ”

"Until now, however, these guns have been based on the initial ones, minor improvements, without a fundamental breakthrough. Do you know why?"

Zhou Ziheng shook his head.

Hu Minghui said: "Because, these technologies are not researched by ourselves, but borrowed from others." It's like a tree trunk, although it looks very thick and tall, it has no roots and can't continue to grow, so it can only be so thick and long all the time. It can't be like a small sapling, but it can slowly grow into a towering tree. ”

Zhou Ziheng didn't understand at first, but then suddenly realized. This kind of artillery is not a product of the existing technological system, but only an imitation of the technological products of the old era.

The scientific and technological products of the old era were built on a complete large-scale industrial system. All its R&D and innovation must be supported by a complete set of systems.

And the current imitation is just a simple use of existing technology to copy an artillery. For example, the parts of the cannon are copied one by one and assembled into a cannon by shaping.

However, even if the artillery is copied, it is not clear what each component does, let alone which parts, what factors affect the artillery, which can continue to be improved, and how to improve it.

These technicians can't understand these at all, and even if they can figure out the role of each component, they can't come up with new improvement directions.

Because now the technology of making artillery is borrowed. Just like this tower, they can use it under a programme, but they can't get full access, so they can't make major changes to it, let alone refactor it from the ground up.

The opposite of these guns was a steam car. This is what the people of the New Age have studied little by little. Although the technical level is not high, it perfectly integrates the Force and rune array technology and realizes many incredible functions. For example, shock absorption, ventilation, heat preservation, weight reduction, acceleration and so on.

If, in those years, there was no such artillery. The technicians of the military studied the artillery as seriously as they did a steam car. Hundreds of years have passed, and perhaps now there is an amazingly powerful Force cannon with rune arrays carved on the cannon body!

Hu Minghui looked at Zhou Ziheng, knowing that he had understood what he meant, and said softly: "Although the fire of civilization in the new era has been ignited from the ashes of the old era, it has embarked on a new path. Doomed to part ways with the old era. So, there's no need to be nostalgic for things from the old era. ”

Zhou Ziheng nodded and said, "I understand." Thank you Grandmaster Hu for your teachings. ”

When the fourth wave of beast tides appeared, Zhou Ziheng had four more helpers by his side. They stood atop the towers, their big spears in their hands, ready to teach them a lesson, these brain-burned beasts.

At the same time, Ma Yi was looking at the injured man on the ground, his face restless. These people were all temporarily collected by him, and they were guarded by the bodyguards of various trading houses. Their life and death, Ma Yi is not distressed. He was worried that he would not be able to hold the two towers.

In front of the five grandmasters, he took possession of the two towers in a moment of greed. Although he was beaten verbally by Xue Weifeng, he didn't let go.

This is because when the bosses of those trading houses heard Ma Yi say that there was a huge reward for defending the tower, they praised their bodyguards and guards one by one. What is the first fast knife in Jiangnan, the first fast sword in Hubei, the first scoop in North China, etc., they have all been hired by them with a lot of money, and they deigned to be guards and bodyguards.

Ma Yi pondered, the words of the bosses of these commercial houses, even if they were discounted, would be five or six percent credible, right? That's why they stubbornly held on to occupy the two towers.

But when it came to the critical moment, Ma Yi found that the rabble could not be counted on at all. Among the fifty or sixty people, there are not even a few sixth-level Force masters, and most of them are fifth-level intermediate.

Such a person can only be cannon fodder if he resists the beast tide outside!

Fortunately, the fence system began to broadcast, and the operating procedures of rapid-fire guns gave this rabble a place to use. However, counting on the fence and rapid-fire cannons, there is still no way to intercept all the monsters and monsters, and someone must be outside to clean up the fish that have slipped through the net.

Ma Yi only has two hands himself, and it is impossible to juggle two towers. Just when he was in a hurry, the great savior Xue Weifeng appeared.

However, Xue Weifeng did not give Ma Yi a good face. He told Ma Yi that he was only responsible for keeping an eye on one tower, and the defense of the other tower needed Ma Yi to figure out his own way.

Ma Yi can have a fart solution. It can only be stopped by this rabble. When the tide of three rounds of beasts fell, nearly half of the rabble under Ma Yi had been damaged, and all of them were sixth-level Force Masters.

Because even if a fifth-level cultivator goes out of the tower to face the battle, he can't kill the strange birds and monsters, and it will directly become their delicious meal. As a last resort, Ma Yi could only send his subordinates out.

In the fourth round of the beast tide, the heavy artillery of the northern border guards finally began to play a role, but incendiary bombs were used again, and the scorching smell of the sky was suffocating, and the rabble under Ma Yi was smoked down several times.

If it weren't for the fence system, the timely broadcast of the tower and the gas mask, it is estimated that even Ma Yi himself would not have been able to support it for long.

Taking advantage of the gap between the beast tide, Ma Yi arranged for people to carry all the injured to the tower for treatment. Then he began to think about whether to ask someone else for help.

But who to turn to?