"Okay, go down to 500 meters." Lin Jian carefully observed the group of special training planes more than 100 meters away, and gave another order to increase the difficulty of the flight.

A flight altitude of 500 meters may seem like nothing, but for a warhawk traveling at a speed of 700 kilometers per hour, it only takes 2.5 seconds to hit the ground and cause a flight accident.

After more than ten seconds, the group of special training planes gradually lowered to a flight altitude of 500 meters, and the endless hilly terrain in the southeast region quickly disappeared, and low-altitude cumulus clouds appeared one after another.

At this altitude, the complex topography of the southeastern hills makes it more than twice as difficult to fly.

Two J-10A canard wing fighters accompanied him, flying together at a low altitude of 500 meters, one left and one right, accompanying the special training aircraft group.

"All members of the special training group, is there a problem?" Lin Jian's face was serious.

"The 8th has reached its limit."

With Wu Qiang, a sweaty HNA student, he made a somewhat uncomfortable sound, and the voices of several students suddenly sounded in the encrypted communication channel.

Three people in the stone courtyard,

Three people in the sea courtyard.

The difficulty of a 500-meter formation to penetrate the defense at a low altitude is far beyond that of 800 meters.

"Trainees who have reached the limit should maintain altitude, heading and speed, and stick to the predetermined airspace, and those who have not reached the limit will be reduced to an altitude of 400 meters." Lin Jian heard the answers of many flight students, made corresponding arrangements, looked firmly at the entire group, and issued a new order.

Lower!

Keep lowering!

Six Falcon that had reached the limit maintained their original altitude, course and speed, while the remaining seven new Falcon and one L-15A Falcon faced downwards and lowered their altitude to form a relative altitude of 400 meters to the ground.

In an instant, Luo Zhenghan, a student of Hainan Airlines, voiced: "Report, the 7th has reached the limit." The whole person was concentrated, his eyes focusing on the rapidly changing hilly terrain ahead through the glass cockpit, and his forehead was covered with sweat.

The lower the altitude, the higher the difficulty of operation, and the almost geometric growth of the situation.

As Luo Zhenghan reported his own situation, Tong Yuan and Yi Xuewu also reported the situation, their eyes staring at the changing terrain, shortness of breath, and the high overload brought by low-altitude and high-speed flight.

Today, only Zhou Hai is left in the entire special training aircraft group, and Bai Tangfei, Yang Min and Wang Zhuyu of Haiyuan, who are on the verge of extreme breathing.

"2, 3, 4, how are you doing?" Zhou Hai controlled as he wanted, and the height of four hundred meters was like fluttering clouds and rain to him, and he didn't care about the high overload of low-altitude flight, looked at the three falcons on the left and right, and said with concern.

The second is Wang Zhuyu, the third is Yang Min, and the fourth is Bai Tangfei, and the number ranking is determined according to the comprehensive results.

Wang Zhuyu's face was flushed, his breathing was heavy, his eyes were like sharp knives, staring straight at the screen of the onboard avionics system, and operating according to the changes in the terrain: "No. 1, I'm fine." ”

"It's fine." Yang Min tried his best to control the fighter plane, signaling that he was fine.

Bai Tangfei's voice was solemn, he gritted his teeth, beads of sweat the size of mung beans crossed his cheeks, his breathing became heavier and heavier, and the rapidly changing complex terrain and high overload made his brain a little unable to keep up: "I'm almost at the limit." ”

"Persistence to the limit, effort not to the limit, continue to descend, 300 meters." Commander Lin Jian's voice was calm and calm, and he gave a new order.

Zhou Hai's face was calm, his eyes were looking ahead, his right hand gently pressed the bar, his movements were gentle and gentle, and he controlled the latest falcon under him that was as agile and light as a swift, and lowered his height.

Three hundred and fifty meters!

With his strong physical fitness, Zhou Hai easily resisted the high overload brought by the speed of 700 kilometers per hour.

"Report, the 4th has reached its limit!" Bai Tangfei's shout mixed with rapid breathing sounded, and the long-term low-altitude penetration that was completely close to the actual combat made him unable to hold on, and he had to maintain his altitude and speed, and did not choose to force the bar.

Two seconds later,

The remaining three L-15C Falcon were lowered to a height of three hundred meters.

Lin Jian, who was wearing a new type of anti-load suit, easily resisted high overloads through scientific and technological strength, held the metal joystick steadily, and looked at the three falcons from high to low with a serious face: "No. 1, No. 2, No. 3, each report the situation." ”

"Number 1 is normal."

Zhou Hai's voice was the same as before.

"No. 2 can still hold on." Wang Zhuyu's pores were oozing with sweat, and his right hand was tightly grasping the joystick.

Yang Min gritted his teeth, only felt that his body was pressed on the seat by a high overload, and used all his strength to control the war eagle under him, constantly adjusting the flight attitude according to the information obtained: "No. 3 has reached the limit. ”

"No. 3 keeps the height, No. 1, No. 2, can it continue to descend?"

Looking at the white number 109 smeared on the nose of the machine and the No. 107 L-15C Falcon, Lin Jian, who had already seen his information, did not react in his heart, but was very satisfied with Wang Zhuyu's performance and asked.

Hearing the sound of Wang Zhuyu's rapid breathing in his ears, Zhou Haiyu frowned slightly, and responded: "No. 1 is fine, No. 2, don't force support." ”

"No. 2 can be lowered by another 50 meters." Wang Zhuyu didn't care about Zhou Hai's advice, she knew that she was on the verge of the limit, but she refused to admit defeat, gritted her teeth, and replied to Lin Jian.

As Wang Zhuyu, who has gone through a lot of hardships to become a female pilot, she has her own will and ideas.

Limits are meant to be broken!

Target, 250 meters flight altitude!

Lin Jian stared at the two falcons with his eyes and gave a new order: "No. 1, 200-meter altitude preparation, No. 2, 250-meter altitude preparation, start." ”

After getting the order, Zhou Hai, who was breathing steadily, continued to press down on the bar and smoothly reduced the flight altitude, and Wang Zhuyu on the right hand side drove the No. 107 L-15C Falcon to follow closely, and every ten meters of descent, the difficulty of operation will increase a little.

"I'm at my limit."

A few seconds later, Wang Zhuyu looked at the screen on the left side to give the flight parameters, the tense strings in his heart relaxed, a smile appeared on his face, and he breathed in a large gulp of high-concentration oxygen.

"No. 1 reaches the target altitude, report to the command aircraft, please instruct." Seeing that Wang Zhuyu did not brace hard, Zhou Hai breathed a sigh of relief, his eyes looked at the ground scenery that was almost within reach, and after reducing to a height of 200 meters, he called Lin Jian through the encrypted communicator.

In the words, there was some eagerness to try, and there was no physiological reaction to fly at low altitude for a long time.

Compared with low-altitude penetration, Zhou Hai prefers thrilling ultra-low-altitude penetration, and it is okay to break through a thousand kilometers in a row.

"Still can't compare to you." Feeling Zhou Hai's ease and normality, Wang Zhuyu, who was panting, sighed and adjusted his flight attitude.

Monster! ——Yang Min, who maintained an altitude of 300 meters, couldn't help twitching the corners of his mouth.

“……”

In the encrypted radio communication channel, the rest of the trainees have fallen silent, and after the test of low-altitude penetration, everyone deeply feels the gap between them and Zhou Hai.

At a height of 200 meters, only Zhou Hai stepped in.