Lian Ting and Wan Xiaoyun also nodded. Xu Saiguo's so-called barrier looked like that, made like a copper wall and iron wall, but in fact, in front of a high-level warrior, it looked like a joke.

Generally speaking, the cultivation base of the Imperial Spirit Realm can already fly for a long time, but the speed is not fast and the altitude is not high.

But if it reaches above the psychic realm, then things like the city wall can no longer stop it.

The only thing that the city wall can stop is the monster beast. Except for the flying monster beast, most of the monster beasts, no matter how high their realm, can’t fly. The height of twenty-five meters, plus their own mountain barrier, It can indeed effectively prevent the impact of the monster beast.

Especially in the Sea of ​​Xu Lin, there are almost no flying monsters, so these gates of Xu Sai were not built to prevent the human race at first, but to prevent the monsters from breaking through Xu Sai.

For the three of them, Wang Lian has the worst realm. After this period of experience, Wang Lian has also improved a bit. Now it is the five-level psychic realm. If they want to cross the pass, it will only be a matter of moments. And the height is enough, absolutely will not let anyone see.

Although Wan Xiaoyun’s realm is not good, she has many methods and endless secrets. Even if she enters independently, she has absolute self-confidence and can not be discovered. Not to mention that Wang Dao alone has the ability to carry others into the air. To be precise, a group can fly. no problem.

But they could also see that Wang Daoguan Chang Ying was serious about secret passage, so he didn't understand his thoughts even more.

Wang Dao smiled and said, "I ask you a question. If you are the ruler of the Xu Sai country and know that the pass cannot guard against the masters of the human race, you have to take precautions, what method will you choose?"

The three of them were taken aback, and then they understood, frowning, and faintly aware of the problem.

"Xiaodao, what do you mean, Xu Saiguo National Protectorate Formation?" Lian Ting asked in a deep voice.

The National Protection Array, like the Mountain Protection Array, actually has other large formations, such as sheltering the city, the family, or a certain territory.

It's just that this type of large array is expensive to build, the layout is complicated, and the technical content is too high. Not only does it require a lot of resources to support, but also professionals.

The king's Taoist Sect, the current mountain guarding formation has been strengthened to the extreme. It can be said that the entire ten-party continent, or even three continents, is impossible for any force to attack the Taoist Sect.

But this is also due to the golden fingers of Wang Dao against the sky, plus the two masters of formations Wang Jin and Feihuan, and even Wang Yu and Wang Dao themselves using their respective spirit bodies for blessing.

Coupled with a series of rare materials, this created an invincible mountain protection formation.

But even if King Dao had such resources, it still spent a lot of effort when building this large formation, even BUFF spent more than 300 million years for strengthening and tempering.

It can be seen that the formation of the mountain guard formation is difficult.

And the National Guarding Formation is more difficult than the Guarding Mountain Formation, because the area is too big!

No matter how strong the mountain guard formation is, it is only a matter of the top of the mountain, no matter how big it is in a country.

It is very difficult to build a large formation in the entire country, and it cannot be done by expanding the radius.

After all, it’s impossible for anyone’s land to be exactly square, round, or a certain fixed shape. They must be irregular shapes. If you want to build a large formation on such a territory, your first consideration is how not to occupy it. In other countries, we must also consider the cities in the country. Those city owners are happy or not. Even if they do, it is impossible to build only one large formation. Instead, multiple large formations must be connected in series, and then multiple large formations must be formed into one formation. Fa, this is called the National Protection Front, and such a project cannot be done overnight.

This is why, up to now, almost no country in the entire Shifang Continent has built a national defense formation. Even in the face of attacks from demons all the time, it has never thought of building it, because there are too many things involved.

Even if you don't consider each other's interests, the little nine in your heart, even if everyone really works together, this resource alone can't be consumed at all.

Now in the entire Shifang Continent, there is only one Nation Protector on the bright side. With the help of Wang Dao, there is no dissatisfaction in Yonghen. Only then can the first Nation Protector appear. Array.

To be precise, it is not considered to be a great formation for protecting the country, because now there are only Shuhai City and Treemark City, and some important cities have built great formations, and they have not been fully connected. If you want to really complete it, at least there will be more than two years. time.

Therefore, Lian Ting and the others ignored this possibility at the beginning.

"Do you think it is impossible? Don't forget that Xu Saiguo is different from other countries. Although there are many cities, those city owners are not of luck. They are unified under the leadership of Xu Saiguo, so the most difficult point is Xu Saiguo doesn't have it at all. They just need to accumulate resources."

"Xu Saiguo is adjacent to the sea of ​​Xu Lin, and he is brave and good at fighting, supporting the mountain and eating the mountain. Over the years, he must have accumulated a lot of resources. If the level is too high, I dare not say that the heavenly protection of the country should still be okay, right? "

"You should remember? The heaven-level guardian formation is already equivalent to our sect sanctuary-level guardian formation."

The Zongmen’s Mountain Guardian Array and the country’s National Guardian Array do not use the same level name. After all, only the sect is qualified to use the sanctuary level and the god’s domain level. Other large formations can only use general levels. name.

And the sky level corresponds to the sanctuary level, but there is no subdivision, some are similar to the high sanctuary level, and some will be the low sanctuary level.

The holy level corresponds to the divine realm level, and the divine level corresponds to the holy level, but there is no superior level in the protection of the country, because for thousands of years, the strongest country has built a **** level protection of the country. , The above is only a theory, but the resources can't keep up at all. If you want to build a superior protection of the country, I am afraid that half of the resources of the ten continents will be used.

"Tian-level? Is it that high? Yun'er, did you find out when you went to investigate?" Wang Lian turned his head and looked at Wan Xiaoyun.

Wan Xiaoyun shook her head and said, "I didn't feel that there was a national defense formation. Maybe I didn't care about it when I went there. After all, I never thought that Xu Saiguo had a national defense formation. Hey? No! Brother, If Xu Saiguo really has a great formation to protect the country, how could Patriarch Chang's people enter silently and leave silently?"

Wang Dao said with a smile, "This sentence is a point. There are only two possibilities. The first is that the Lord Xu Sai deliberately. He knows that there is a secret road here, and he knows that someone has gone in and out, but He ignored it."

"It might be because he knows that this is the descendant of Chang's grandmother, and there is still a sense of incense in his heart, so he doesn't bother to care about it, but...I don't think it is. The possibility is too small."

Lian Ting and the three nodded in agreement. They didn’t think that would be the case. With the madness of King Xu Sai and his extinction of humanity, there could be no such incense, let alone what Xu Sai was going to do. It is absolutely confidential, how can it be known to others?

Wang Dao raised **** and said, "So it should be the second type. This secret passage is likely to be a loophole in Xu Sai's National Defense Front!"