The night was dark and the wind was high, and an agile figure quietly touched the head of Yijing City in the night, and avoided the patrolling soldiers all the way to the outside of the city.

The city of Yijing is vast, and the Yuan army besieging the city cannot be surrounded by water, and the soldiers defending the city cannot imitate it. Due to the length of the outer wall, only one patrol soldier could be placed every fifty paces or so.

After the Yuan army dug a large-scale tunnel outside the city, Gongsun Zhan sent a part of the soldiers to get off the city wall and patrol back and forth in the streets and alleys of the city to prevent the Yuan army from suddenly entering the city from the tunnel, which made the garrison on the city wall weaker, reduced to one person per hundred.

A defense force of one hundred paces and one person, monitoring the siege of the army under the city, without any problems, can completely when the attacker is close to the city, beat the war drums, blow the horn, and send an alarm to the people and horses of the own side. But there is nothing that can be done about the scouts who are skilled at climbing walls, who are like ghosts in the dark, and they are too many to be caught off guard, going in and out of the walls to spy on information.

Under the cover of night, the man in black quietly approached a battlement, took out a rope with iron claws from his bosom and hooked it on the battlement, and then ran the rope five or six zhang long down from the city wall, and slid down the city wall with both hands......

After landing on the ground, the man in black smiled contemptuously at the defenders on the city wall. It's okay to monitor a large number of siegers with such a garrison intensity, but for a scout like himself with unique skills, it is simply useless.

Shook off the rope vigorously, and pulled the iron claw and the rope off one by one, but it was too careless. The iron claw didn't catch it, and accidentally landed on the ground, making a metallic sound of "choking".

"It's not good, there are spies in the city!"

The defenders of the city were not deaf after all, and immediately noticed that there were people under the city walls, shouted and beckoned their companions to come and support. Immediately, a few soldiers from the nearest place gathered together, shook the torches in their hands, and fired arrows at the city.

The man in black ran faster than a rabbit. A few rabbits descended and came to the moat. Leaped into the icy water and disappeared from the water......

"What about people, where are people?"

More than a dozen defenders had already gathered at the head of the city. Torches fluttering. Look down the city. But I can no longer see the figure of the fine work just now. I could only shoot a few arrows into the water.

Under the water, a figure like a fish swam out of the water, showed its head in another spot, and then climbed to the shore as fast as possible. In the exclamation of the soldiers at the head of the city, he ran towards the Yuan army camp in the distance. The soldiers at the head of the city wanted to shoot arrows again, but the range was already too late, so they could only call in vain, and it was a mess.

"General Qiyu, a man in black was caught outside the camp gate, claiming to be a scout serving you, and came to deliver important information, I don't know what to do?"

Yuan Mai was asleep, and was woken up by the sound of the guards outside the door, and got up, guessing that most of the things that came were Zhen Yao's subordinates, and it was estimated that he had already spied on the place where Zhao Yun was being held.

Hurriedly put on his clothes and ordered, "Bring me quickly!" ”

After a short time, a man dressed in black and soaked was brought into the camp, and after seeing Yuan Mai, he bowed his head and bowed: "The villain is Cao Qian, the number one scout under Zhen Erye, who has already spied on the place where Zhao Yun is being held according to his orders, and has come to deliver a letter!" ”

"Well, yes, under such a tight defense, he can still come and go freely, he is a talent!"

Hearing that the spy had found the place where Zhao Yun was being held, Yuan Mai was very happy. patted Cao Qian's shoulder, praised a few words, took out a silver ingot from the box on the handsome case, and stuffed it into his hand, "Hard work, this reward is for you!" Bring me the map and I'll take a look at it, and let the soldier take you to change your clothes!" ”

Cao Qian took out a brown paper bag from his arms, and the map he made was packed inside, and the outer skin could be used to prevent the map from being damaged by water blisters.

Spread out the map on the table, didn't bother to change clothes, and introduced to Yuan Mai: "General, please see, this map villain was drawn for half a month before it was made, and the place where General Zhao Yun was held was marked in it, and several important granaries of Gongsun Chan were also discovered by me, and they were all marked in the map for Gongzi's reference and decision-making!" ”

Yuan Mai glanced at the map, only to see that the production is very fine, the streets and alleys, where there are barracks, where there are granaries, all are indicated, it is really a rare siege weapon, with it, it is clear about the layout of the city, and it plays a role in getting twice the result with half the effort!

"Not bad, not bad...... That's great! ”

The more Yuan Mai looked at the map, the more he liked it, and praised him: "It seems that you are indeed a talent, I will tell Zhen Er when I go back, you can do things directly under me, sometimes I also need excellent scouts to complete the task!" If I had such an outstanding talent as you under my command earlier, I wouldn't have been caught writing a letter to Zhao Yun! ”

"Thank you for the kindness of Gongzi, the villain is willing to serve Gongzi for the work of dogs and horses!" Cao Qian knelt down to thank him, and then followed the soldiers to change their clothes.

The next day, Yuan Mai selected 1,000 people from his soldiers and asked Cao Qian to lead the digging of tunnels, a large prison leading to Zhao Yun's imprisonment, so that at the right time, he could rush out of the tunnels to rescue Zhao Yun, and dig a few more tunnels leading to the major granaries.

According to the development of history, after the city gate was breached, the desperate Gongsun Chan killed his wife, concubines and children, set fire to the mansion and granary, and burned the property in the city to ashes. Since Yuan bought the prophet of uncertainty and knew the result in advance, he must do his best to keep the grain and grass, and he can get one more stone!

The days flew by, and in the blink of an eye, another four or five days passed, and it was already the middle of March, and the weather was gradually warming.

The tunnels outside Yijing City were dug and devastated, like rat holes in the fields, densely packed, so that the defenders on the head of the city couldn't tell which was real and which was fake? With the sound of "clanging", a number of tunnels have been dug into the city of Yijing, just waiting for the right opportunity to break through the ground and launch a surprise attack.

On the city wall, I saw that Yuan Shao's nearly 100,000 troops did not come to attack the city, and only dug tunnels outside every day, which made Gongsun Zan hate the root of his teeth, and did not dare to go out of the city for a decisive battle.

A few days later, one night, Gongsun Xu's envoy forcibly broke through the siege, rushed into Yijing City, and brought information to Gongsun Zhan, Pingnan Zhonglang gathered Zhang Yan 100,000 Black Mountain Army, the troops were divided into three routes, and they were marching towards Yijing, it is estimated that they will arrive in a few days, please wait for reinforcements from General Baima!

Hearing that Zhang Yan led an army of 100,000 to the rescue, Gongsun Zhan was overjoyed. Immediately repair a book, let the scout go to Zhang Yan to deliver a letter, and agreed that three days later, on March 19, raise fire as a number, attack inside and outside, concentrate troops, and attack Gaolan and Yuan Mai at the west gate at the same time, and smash Yuan Shao's siege plan! (To be continued......)