"In addition, if you've used up your Xiajian, you must supplement it in time. Otherwise, if I summon you, you don't know!" Cheng Yu warned.
If there is no lower Jane on the side of the king, then his summons will fail. And he can easily judge whether the message has been received by Waiwang according to whether the upper Jane in his hand is broken or not.
As long as the king looked at the jade slips, the jade slips in his hand would also be broken. If Waiwang didn't check the jade slips, the jade slips in his hand would be intact until Waiwang checked the jade slips.
However, there is also a time limit for the communication of the jade slips. If the other party does not check the jade slips for more than 12 hours, the contents of the jade slips will disappear and can be reused.
"I understand!" The king nodded again and quickly put away the jade slips.
This is a good thing. With this, there is no need to worry about not having enough jade slips. When he goes back, he will make dozens of them for later use.
"Young master, is it unfair that you only give such a good thing to the king?" Luo Keya saw the king excitedly put away the jade slips, and he was also envious.
The king showed them the use of jade slips, so she also knew that the jade slips were very practical.
And this time, if it wasn't for the jade slips, how could he tell Cheng Yu about his situation at any time, and how could he know about Cheng Yu's situation?
So it's all thanks to the jade slips. She naturally hopes to have such a good thing.
"What do you want this for?" Cheng Yu said with a smile.
"If only the outer king has this thing, in case the outer king has to stay in the outer court of Baiyang in the future, but we leave the outer court of Baiyang with people and horses, then if we don't have this jade slip, how can we report our situation to the young master?" Rocoya said.
Jade Jane is the best way she has ever seen to summon. Of course, she also hopes to use this method to summon herself.
"That's what I said!" Cheng Yu thought about it, as if it was the same. Then he said, "well, I'll prepare a set of jade slips for each of your principal elders. Is that ok?"
"Really?" Luo Keya is very happy. If each of their principal elders could have a set of jade slips for summoning, it would be great.
"In order to ensure the concealment of the contents of these jade slips, there is only one-to-one communication between the upper and lower jade slips.
Therefore, in addition to the communication between us, we must not let a third person have the same jade slips, otherwise the communication between us will be seen by the third person. " Cheng Yu see Luo Keya so happy, but must remind each other.
This is a very important key. The communication array of each set of communication jade slips is different. However, these communication arrays are very easy to change, so a new set of communication jade slips can be made with a little change. Only he knows such a change, and it will not overlap with other people's communication jade slips.
"Please don't worry, young master. I'll give them good instructions then." Rocoya said happily.
"Anyway, I have to prepare so many sets, so I'll just give you a big gift!" Cheng Yu thought about it and thought it might be a good thing to give them something, so he said.
"What gift?" Waiwang and rocoya both have some expectations!
"As I have just said, in general, for the sake of confidentiality, these jade slips are delivered one-to-one by the upper and lower slips.
However, this is only one kind of communication jade slips, and there are some more complex communication jade slips. " Cheng Yu said.
"Young master's meaning, is there still many to many jade slips?" The king said with a flash in his eyes.
"Almost, but one to many jade slips!" Cheng Yu said.
"One to many? Please tell me more about it Said the king.
"Well, I'll give you this set of jade slips, which you can use to communicate with the defenders of Baiyang outer court." Cheng Yu said.
"Summon the border guards? However, there are nine border towns in Baiyang outer court. Can the young master's special set of jade slips be sent to nine The king was curious.
"If that's the case, it's OK for Waiwang to take Shangjian and the other nine border towns to take Xiajian!" Rocoya said.
"It's really OK. If all nine of them take the next Jane, they will send you a message, and you can see it.
But, because the jade slips on their hands are the same, if you give an order to one of the cities, the other eight border cities will also see it.
It doesn't matter if it's not some important information, but what if it can only be known by one city? Isn't that a bad thing? " Cheng Yu explained.
"That young master's meaning, you this set of special jade slips also can alone send a message to one of the border cities?" Wang asked expectantly.
"Yes, that's why I gave you this set of jade slips. In the future, if anyone in the border town enters Baiyang outer court, you can get the latest news at the first time. I think this is good for you and me! " Cheng Yu said.
"If there is such a jade slip, it would be wonderful!" The king said happily.
Just like before, when Xunte sent them into Baiyang outer court, his messenger arrived at Baiyang outer court as soon as possible.
But even so, it took half a month. After he received the news, Xunte sent them there half a month later.
If there are no special circumstances, this kind of subpoena is OK.
But if the other side is leading the army to attack, then this time may not be of great use.
What's more, it's more risky to use subpoena to make subpoena. Sometimes subpoena will be found, and if it fails, the consequences will be even more unimaginable.
If every border town has its own jade slips, then there is no need to worry about the delay of any news.
More importantly, if he has any instructions, he can also pass them to the city guards in the fastest way.
For example, when foreign enemies attack, if he wants a border town to be sealed immediately, if he uses a messenger, the news will come back and forth, and the border town nearest to Baiyang's outer court will waste a month.
When this order reached the border town, it had no effect. Maybe their company had already been unable to defend.
But with this kind of jade slips, he can not only immediately know that there are foreign enemies attacking the border city, but also immediately order the garrison to seal the city without any delay.
"But this set of jade slips is troublesome. I need some time to set up the array, so you may have to stay with me for a few days!" Cheng Yu said.