The so-called wind shear refers to a sudden change in wind speed in the horizontal or vertical direction, and the reason why the aircraft can overcome gravity (strictly speaking, the lift and gravity are equal in magnitude and opposite directions), fly in the sky, because the air flow speed above and below the wing of the aircraft is different, the shape of the wing makes the flow rate of the air above the wing much higher than the flow rate below, according to Bernoulli's principle, the air pressure of the fast flow rate is small, So the air below creates a pressure upwards, which is where the lift of the aircraft comes from. To maintain this pressure difference, the aircraft must maintain a certain speed. The sudden change in the air flow that Xu Feng saw made the speed of the plane relative to the air decrease all of a sudden.

This kind of accident generally occurs at low altitude, Xu Feng is not the first time to encounter this situation, the gravity of the aircraft at this time is greater than the lift, the center of gravity of the J-24 aircraft is close to the rear of the fuselage, so the plane rolls backwards in an instant, and the nose is lifted up to the air, which will aggravate the development of stalling, Xu Feng hurriedly pressed the joystick down, and the aerodynamic torque generated by the elevator pressed the nose downward, Xu Feng adjusted the position of the canard and the leading edge flap to speed up the flow rate of the air above the wing, and at the same time refueled the engine combustion chamber, Make the flight speed of the aircraft faster.

The momentum of the plane's stall stopped, Xu Feng pulled the plane up, climbed quickly, and suddenly, Xu Feng saw a black spot appear in the sky in front of him.

It was a blessing and a curse, and a flock of swallows came out of the clouds. Another important reason why airplanes do not fly at low altitudes is that low altitudes are a paradise for birds, except for a very small number of large birds such as vultures, eagles, geese and swans that can fly above 1,500 meters.

Xu Feng just wanted to dodge, but it was too late, the relative speed was too fast, and the plane passed through the flock of birds in an instant, because the cockpit was fully enclosed, and the sound insulation effect was very good, so Xu Feng didn't hear the sound of impact, he just felt the vibration more than a dozen times.

His first reaction was to look at the engine's tachometer, and the pointer on the tachometer was about to hit zero, which meant that the engine's compressor was no longer working.

Originally, the body of the swallow was very small, and it would not cause much damage to the blades of the engine, but this was a group of swallows, and the blades of the engine compressor could not be supported by repeated impacts, and a blade of the first stage of moving blades finally could not bear it, and it broke instantly, and the engine that was up to 10,000 revolutions per minute instantly made other blades of the same level hit it, and the entire engine blades of the first stage were "shaved heads", and the huge air pressure difference of the engine sucked these fragments backwards, and few of the blades of the rear stage compressor survived!

The compressor is a necessary part of the aero engine, used to compress the air, the blades are gone, the engine can not work, the aircraft that lost power suddenly slowed down under the action of air resistance, Xu Feng knew that the crash was inevitable, he decisively pulled down the ejection seat starting lever, the catapult rocket started, the cockpit cover was blown open, and Xu Feng ejected from the plane.

Let's talk about Lin Yuan in the Qing army camp, the way he thought of was - to forge a telegram from Li Hongzhang!

This method is not difficult in terms of technical means, because the AWACS aircraft has been listening to all kinds of telegrams to and from the Korean Peninsula, and the encryption method in this era can only be described as simple compared to the 21st century, so the Beijing ship deciphered the Qing court's code with the most basic frequency analysis method after intercepting enough Qing court telegrams.

The so-called frequency analysis method is to analyze the number of occurrences of each symbol and compare them with the number of occurrences of a single word in Chinese, so as to determine which Chinese character each symbol corresponds to.

Soon, Ye Zhichao received a telegram from Li Hongzhang, the content of the telegram was very concise, attacking the Japanese army, seeing this telegram, Ye Zhichao was a little surprised, Li Hongzhang treated his subordinates on weekdays, there is a kind of paternalistic style of shouting and drinking, laughing and scolding, which is also reflected in the previous telegrams, and this telegram, why is it so concise?

However, he could not disobey Li Hongzhang's order, and immediately decided to send troops.

Wei Rugui volunteered to lead more than 1,500 cavalry under his command to attack the Japanese army on the periphery of Mudan Terrace, and the remaining soldiers and horses, as a reserve, to prevent the Japanese army in Pyongyang from attacking, in fact, they were too worried, so they were hungry for days, and there were less than 1,000 Japanese troops in Pyongyang City with combat effectiveness, and the real elite had all been put into the Peony Terrace battlefield.

At this time, the Peony Terrace was on the verge of life and death, all the machine gun shells had been fired, the grenades had been thrown away, and everyone had six magazines left in their hands, more than a hundred rounds of bullets, and these bullets would soon run out. Although the Japanese had just been bombarded, they saw a large opening in the wall of the fortress, like a swarm of bloody locusts, rushing towards the gap.

In the era when Lin Yuan lived, the cavalry had long since faded out of the battlefield, so he had never seen the cavalry fighting, and the few times he saw the cavalry battle scene was in the movie, in the movie, those cavalry wielded sabers and rushed to the enemy, every time he saw such a picture, he would secretly scold this commander for not having a long brain, so he rushed in, if he could break up the opponent's formation, it would be fine, if he couldn't disperse, then the cavalry would become a group of infantry on horseback.

Wei Rugui was not like the cavalry leaders in the movie, waving his saber and being the first to rush into the enemy group, he stood on the high ground and commanded, he divided the cavalry into two teams, and the first team charged first.

Thousands of hundreds of war horses together impact, the sound alone is enough to make the people who hear it frightened, the Japanese army on the periphery hurriedly organized defense, they have no heavy artillery, so it is impossible to cause damage to the cavalry troops at a long distance, when the cavalry of the Qing army hit the Japanese army 400 meters away from the Japanese army, two pairs of men and horses to the left and right, surrounded the Japanese army in a circle, the Qing army then fired, the Qing army was equipped with imported repeating rifles, so from the rate of fire far beyond the Japanese army, the Japanese army was quickly knocked down a large area.

The rest of the Japanese troops hurriedly hid in the woods, the woods were not dense in the first place, and in addition to the baptism of war, it was even more sparse, such woods were not enough to block the cavalry, the cavalry on both sides did not rush into the woods, they detoured farther on both sides, and then rushed to the hillside, wanting to outflank the Japanese troops attacking on the hillside.

At this time, the five hundred cavalry in the rear set off, and Lin Yuan found that the horses of the five hundred cavalry were very thin and small, which was very suitable for fighting in this wood, and the five hundred cavalry quickly rushed into the woods.

The five hundred cavalrymen directly drew their sabers and began hand-to-hand combat, and one cavalryman rushed in front of a Japanese soldier, who was cut off in the head with a knife before he could react.

The rest of the soldiers saw that someone was going to fight hand-to-hand, roared with bayonets, and rushed to the Qing cavalry, a cavalry saw the devil rushing to the front, a horse, the horse and the master of the heart, raised the front hooves, kicked the devil in the chest, after a sound of broken bones, the devil was kicked out of the air.

These cavalrymen had superb swordsmanship, and their swords cut off the heads of the devils, and the Japanese could not resist them, and quickly retreated.

At this time, the situation of Peony Terrace was even more urgent, and Chen Fei had to give an order to give up the defense of the outer wall of the fortress and move to the inside of the fortress, hoping for street fighting.

At this time, the Qing army on the periphery had begun to outflank, and the Japanese army opened the gate of the fortress and attacked the inside of the fortress, which one could be faster?