After a great battle between the two Primal Ancestors, the valley became a mess, including the stations of the other four sects, and all the buildings had collapsed. However, the small waterhole in the valley did not seem to be affected in the slightest, presumably due to the effect of the prohibition of the secret realm.

Although the disciples of Yuqing didn't make much effort, they experienced such an exciting night, especially being harassed by the resentful ghosts, and they all seemed a little tired at this time. However, in their eyes, there is more of a yearning for a higher realm and a stronger power.

As for the left-behind disciples of the four sects, they don't need to look to know that there are many auspicious ones, maybe when the ghost demon Taoist first arrived, these people were killed by those black shadows. But in this way, this is not a matter for the Yuqing Sect's family, after all, among the remaining disciples of each sect, there are disciples of the Foundation Realm.

Mo Ru swept his mind and knew that there was indeed no one in the four sects who survived, so he took out four paper cranes, wrote a message and threw them into the air. I saw four paper cranes, as if they were alive, spinning in mid-air, flapping their wings and flying in all directions, and soon disappeared.

Seeing this scene, Ye Zan couldn't help but touch his chin, although this paper crane looks quite magical, but compared to the communication technology of science and technology, it may still be a lot worse in terms of practicality.

In this world, there are many ways to communicate, but there is really no communication technology that is so convenient and fast like the communication technology in the world of science and technology.

In the world, it is still used in the way of a post station fast horse, at most a flying pigeon to pass the book, whether it is efficiency or safety, it is outrageous. And the cultivation world, although it is better than the world, there is this kind of paper crane transmission, there is a flying sword transmission, and there is a kind of communication jade talisman, but there are also their own problems.

Paper cranes are a common method for practitioners, although the speed is not slow, but it is not up to instant communication, and if you want to talk more, you can only fold paper cranes back and forth between two people. Flying sword to pass the book, to put it bluntly, is to send the book credit flying sword to the past, and it is often used between acquaintances. If the relationship is not too good, this flying sword will have a kind of provocative and demonstrative meaning.

As for the communication jade talisman, the transmission speed is the fastest, but it is also the least used by cultivators. The reason is very simple, once a message is transmitted, a set of jade talismans must be crushed, and what information to transmit must be agreed in advance. For example, if it is agreed that the jade talisman will be crushed over there, then when this side finds that its jade talisman is broken, it will know that the situation in the agreement has occurred over there.

In the eyes of people in the world of technology, although the principle may be very subtle, the effect is like a joke.

However, is the communication technology of the technological world crushing these communication methods?

In fact, it can't be said to be so absolute, if it is purely from the effect, it may be that the technology communication is instant and efficient. However, it is not as easy as it seems to be to do this. For users, the two sides of the communication are simply pressing a few buttons, but behind this there is a lot of cost investment to achieve this simplicity.

Not to mention the wisdom of the predecessors, the dedication of countless people, just the process of this communication. The relay station required for signal transmission, whether it is a satellite in the sky or a base station network on the ground, which does not require a lot of cost investment to build. In the interstellar era, the transmission of information between star fields will require more construction costs and maintenance costs.

And in this world, not to mention the primitive means of communication in the world, let's talk about these three common methods in the cultivation world. Regardless of the effect, or how difficult it is to use, at least this is a matter of the two communicators, and there is a cost in the middle that the communicator pays, such as mana.

Therefore, the problem is, if Ye Zan wants to promote scientific and technological communication in this world, one of the problems that cannot be avoided is signal relay.

When they were in the secret realm, the communicators used by the Yuqing disciples had a limited transmission distance. It's just that the secret realm is so big, and the area set aside for the Yuqing Sect is even smaller, and it is impossible for the Yuqing disciples to leave each other too far.

And what about this so-called Shenhua Realm? Its area is unimaginably large, and its vertical and horizontal length is more than 10,000 miles, almost comparable to the solar system of the technological world. In such a huge world, it is simply impossible for communication to go through transit.

There are two ways to relay signals, launch satellites or build ground base stations. It seems that the cost of launching a satellite is lower, but it was directly denied by Ye Zan, and the outer sky of this world is much more terrifying than the starry sky of the technological world.

The outer heaven of this world is called the Endless Void, but although it is said to be a void, it does not mean that there is really nothing. It is said that in the endless void, there will be a void storm blowing through every now and then, and all kinds of evil qi will be mixed together, and the earth immortal will lose half his life if he falls inside. Do you still want to launch a satellite? I'm afraid that within a day of going up, it will be blown away.

Therefore, it is more reliable to have a ground base station.

Ye Zan is not whimsical, but really wants to get this thing done, to say that it is convenient for Yuqingzong to communicate with each other, and to say that it may be possible to build a communication company that monopolizes the world. Of course, the communication company has been considered for a long time, and even if it is done now, it will not be able to hold it with the strength of Yuqingzong.

In this regard, Ye Zan can be regarded as a wise man. In the technology world, if it weren't for the family's eagerness for quick success and quick success, the early launch of the interdimensional storage technology may not be the result now.

Ye Zan was thinking about the plan in his heart, and he was a little silent for a while. Mo Ru looked at this situation, and thought that this Supreme Master Uncle Ancestor was frightened, after all, no matter how senior Ye Zan was, his age was there. Not everyone, after having such an experience, can be indifferent.

"Senior brother," Mo Ru came to Ye Zan's side and cried out with some concern.

"Huh?" Ye Zan came back to his senses and turned his head to look to the side.

"Taishang, it's all our negligence that makes Taishang frightened. Mo Ru used a voice that only Ye Zan could hear, and he was very ashamed to plead guilty.

Ye Zan was still a little uncomfortable for a while, usually Lao Mo Lao Mo screamed, so he didn't regard Mo Ru as an elder older than himself. But at this moment, seeing the worry on Mo Ru's face, Ye Zan actually thought of his father, although it was very bloody.

Coming to this world alone, the family on the other side of the technology world is gone, and the blood relatives are gone. I don't think about it just because I don't dare to think about it, but can I really put everything aside and mix in this world without heart and lungs?

"Taishang?" Mo Ru snorted softly again.

Ye Zan shook his head, as if he wanted to get rid of what he had just thought, and then showed his usual smile on his face, and said, "It's okay, it's okay, isn't it okay for me!" Old Mo, your ability just now is really amazing, don't say anything about magic weapons or anything, what kind of trick is your trick that releases a lot of light, when can I learn it?"