At this time, an empty voice sounded in Wei Yan's head: "My lord, Yi Yuan is grateful for the promises and expectations you gave him, and he is very grateful, and his loyalty has increased by 20 points, and it is now 195 points." Pen "Fun" Pavilion www.biquge.info"

Wei Yan was taken aback, unconsciously, Yi's loyalty to himself was so high, but, put yourself in his shoes, he didn't have to cross over, if the boss was willing to treat himself like Wei Yan, and was willing to solemnly promise his position as department manager, I am afraid that his loyalty to the boss could also quickly rise to 255, and from then on, he would never change jobs!

The rest of the time is for Wei Yan to raid some undercover techniques of the Yi family, including the unheard of and unseen cipherwriting techniques of people in the late Eastern Han Dynasty.

In fact, cipherwriting technology is not unique to modern times, but has existed since ancient times. Because China has had many wars since ancient times, the time and time coincide, so the intelligence research work in ancient China has always been at the forefront of the world, whether it is Yin Fu, Yin calligraphy, or word verification, reverse cutting code, are all visible to the eye, for this reason, the ancients invented the "secret writing".

The special ink used by the ancients is not high-tech, but a common alum water in people's lives. The words written by alum water cannot be seen on the paper at all after drying, but if it is immersed in water, the handwriting suddenly appears, because the alum water evaporates and dries and leaves potassium aluminum sulfate (the product of alum decrystallization) on the paper, and when the paper with potassium aluminum sulfate ink is immersed in water, the potassium aluminum sulfate in it will absorb the water on the nearby paper to form alum, so the writing place is soaked more slowly than other places, and the white handwriting is immediately visible.

The "Alum Book Case" during the Kangxi period was caused by the alum water secret letter of the deposed prince Yinren. In the spring of the fifty-fourth year of Kangxi, Kangxi personally conquered Dzungaria, and Yinren, who got the news, decided to use this opportunity to turn the tables. He used a lot of money to buy off He Mengfu, a doctor who often treats Fujin, and asked He to leave the palace with the secret letter of alum water, but he didn't expect that the secret letter would be intercepted by Abran, the auxiliary prince, and Yinren's plan to restore his status as the crown prince failed.

In addition to alum water, the ancients also used rice soup to write secret letters, and the recipient smeared iodine wine on the secret letters, and purple handwriting appeared.

However, at the end of the Eastern Han Dynasty, these two ciphering techniques did not appear, so when Wei Yan handed it over to the Yi nationality and those who maintained a one-line contact with the Yi nationality, they were all amazed at Wei Yan.

This kind of ciphering technique and other espionage techniques are related to the success or failure of Wei Yan's hegemony, so when Wei Yan teaches it, he will ensure that those meticulous and undercover agents are more than 100 loyal to him and have a strong temperament, otherwise once one party betrays, it will be too easy for the enemy to deal with him.

After Wei Yan's training, basically, the technology of his force's intelligence organization is ranked first among more than a dozen princes, and it is in an overwhelming victory, of course, there is a danger that it may be intercepted at any time, so you still have to be cautious.

After a day of assault training, the Iraqi nationality with an intelligence of up to 89 fully understood.

Then, Wei Yan said to him in front of everyone (all the activities to solicit Iraqi nationality were carried out quietly before this): "Yijibo, let you go back now, tell your lord Liu Biao, and ask him to give me one million stone grain and ten thousand craftsmen, otherwise I will immediately attack Xiangyang and take Liu Biao's life!" ”

Yi looked in a hurry and rode back to Xiangyang.

When the Yi arrived at the Xiangyang Zhennan General's Mansion, he saw the grizzled Cai Mao and the angry Liu Biao, while Zhang Yun was nowhere to be seen.

……

A few days ago, Cai Mao and Zhang Yun's 27,000 men and horses were shocked by Wei Yan and Hu Che'er's bravado, and the army was defeated like a mountain, and fled all the way, and fled until dawn the next day before stopping, gathering people and horses, barely gathering more than 8,000 people, most of them had no weapons or armor, and barely took a wooden stick to defend themselves, and they were hungry and desperate, and their morale was extremely low.

In order to fill their stomachs and save the hearts of the army, Cai Mao and Zhang Yun also put aside the hypocrisy of the children of the family, burned and looted several villages, barely filled their stomachs, and saved a little morale.

However, when they mentioned Wei Yan now, they became frightened birds, and they didn't dare to go north at all, so they could only continue to retreat to Xiangyang.

When they were less than fifty miles away from Xiangyang, Cai Mao, Zhang Yun and the eight thousand soldiers all put their hearts down, after all, they were so close to Xiangyang, Wei Yan's men and horses didn't dare to go so deep.

After passing a road between two mountains and a ravine, they were also unprepared, and they thought that Wei Yan's men and horses would not dare to run here to set up an ambush.

I have to say that Cai Mao and Zhang Yun's self-righteous and self-righteous children of the family have harmed them, what do they think, but Wei Yan will not do what they want.

When Cai Mao and Zhang Yun's men and horses all walked into the valley, the arrows on the slopes on both sides were like flying locusts, and the rolling stones and trees fell in an instant.

The Jingzhou army was in chaos and fled in all directions.

Liao Hua and Guan Hai led 4,000 elite soldiers to kill from the slopes on both sides, and the Jingzhou army was bleeding again.

Zhang Yun was captured by Guan Haisheng in less than ten rounds before Guan Hai Ma walked.

Cai Mao took the road and left, and less than 2,000 people fled back to Hanshui with him, leaving more than 3,000 killed and more than 3,000 captured.

Until he arrived in Xiangyang City, Cai Mao still couldn't understand a question, why Wei Yan's men and horses marched so fast.

He didn't know that in the past six months, what kind of training Liaohua and Guanhai had received, all of which were similar to the special forces training, field survival training, and mountain warfare training of later generations, the training was very hard, but if they couldn't hold on, they would starve to death, and they were more willing to endure such hard training than starvation, so that they could become elite soldiers, and then accompanied by a large number of actual combat, Liaohua and Guanhai, the two mountain combat rapid reaction forces, quickly became the fastest infantry in this era, even more powerful than Feiyan Zhang Yan.

In the past few days, Liao Hua and Guan Hai climbed over more than a dozen mountains, ambushed day and night, and finally ambushed Cai Mao and Zhang Yun on the main road to return to Xiangyang, and issued the final fatal blow to the Jingzhou army.

Cai Mao was full of confidence before he went, thinking that the 30,000 army would definitely be destroyed against Wei Yan, but he never expected that he only had less than 3,000 remnants left, Zhang Yun was captured, Cai Zhong and Cai Xun were beheaded, and Cai Mao saw Liu Biao in disgrace.

Liu Biao, Kuai Yue and others were chatting with a group of children of the family and literati, and they were all stunned when they suddenly saw Cai Mao appear so embarrassed.

In order to cover up his mistakes and appear that he was not so stupid, Cai Mao said that Wei Yan dispatched more than 20,000 people, and Zhang Xiu also dispatched more than 20,000 cavalry.

Liu Biao was shocked: "I can't imagine that Wei Yan's troops are so strong, and I can't imagine that Zhang Xiu will join forces with Wei Yan, what should I do now?" ”

At this moment, a person came from outside and said loudly: "Lord, I have a plan, but An Weiyan!" ”