Time travel! Regrets will never happen again!

At the same time, another wave of aircraft was attacked by air defense forces halfway.

Not only were they attacked by fixed air defense positions, but 20 Bofors 18mm anti-aircraft guns towed by more than 40 trucks used for mobile air defense also joined the battle when the Japanese planes fled in panic.

A total of 22 bombers were destroyed, 5 were damaged, and were damaged. They did not choose to continue the bombing mission, but chose to retreat.

This choice saved the remaining Japanese bombers, and another wave of planes commanded by Yamamoto was about to fly over the target.

However, what they didn't know was that a group of uninvited guests suddenly broke in.

"Report! Radar shows that there are 8 planes approaching our defense zone at high speed from the southwest! Judging from the radar display, they are not large bombers, but fighter jets!"

A radar soldier reported the sudden discovery on the radar screen to the command center.

The Japanese were so cunning that they actually sent out three waves of aircraft. But the third wave of fighters they sent were escort fighters?

But why didn't they guard the bomber group that needed protection? Instead, they chose to act alone from another direction? This doesn't make sense!

"Notify the southwest front and have them prepare for battle!"

Wang Chun was personally in charge of the air defense operations. Looking at the three waves of Japanese bomber aircraft, he still lamented that the air defense capability was not strong enough and that he did not have his own fighter planes.

In fact, the best way to smash the enemy's air raid is to send a large number of fighter jets to intercept in the air.

However, he did not have any pilots under his command for the time being. The 12 BF109s he exchanged last time were all given to the Eighth Route Army. They did have some pilots but lacked fighter planes.

"Report! A call from the Eighth Route Army Headquarters! The Eighth Route Army's First Aviation Brigade has sent 8 BF109s to assist in the battle. They are entering from our southwest airspace. Please pay attention to the relevant situation!"

After hearing the telegram from the Eighth Route Army Headquarters delivered by the Telegraph Office, everyone in the air defense command center breathed a sigh of relief, and at the same time, they felt vaguely excited.

The Eighth Route Army pilots flying 8 BF109 fighters quickly entered the Guancenshan base, 60 kilometers away from the air defense command.

The onboard radio communicator finally contacted the air defense command center.

"Calling the Aerie! Calling the Aerie! I am the eaglet!"

"Eagle's Nest received! Eagle's Nest received!"

Wang Chun was very excited when he heard the voice on the radio. The Eighth Route Army sent almost all of its fighter planes to reinforce him.

You must know that other bases of the Eighth Route Army were still fighting against the Japanese, and even the headquarters was often bombed by Japanese fighter planes.

The shrill sound of air defense sirens kept surrounding them, but the bombers led by Yamamoto finally broke through the interception of the air defense firepower network.

They flew over an industrial zone that had just been built not long ago. In fact, it couldn't be considered an industrial zone, but just some simple factories and mines.

Of course, the main division barracks, recruit training center, and weapons depot are all in this area.

The Japanese bombers lowered their altitude and began dropping bombs under fierce anti-aircraft fire.

The soldiers of the 78th Army on the ground were all red-eyed. All the surrounding buildings were just built after several months of hard work day and night by hundreds of thousands of soldiers and civilians in the entire base.

How could they bear to watch the children they raised being abused by the Japanese?

"Damn you, Japs! I'm going to kill you!" Cao Dading was sitting at the operating position of a 20mm anti-aircraft gun.

He kept stepping on the firing pedal, and a Japanese Type 97 heavy carrier-borne bomber was put into the crosshairs of his sight.

"Bang, bang, bang!" The 20mm shells flew rapidly towards the 2000 carrier-based bomber which was more than 97 meters above the ground.

Lieutenant Sakai also had his bloodshot eyes open at this time, and he no longer cared about whether he would be hit by the ground's anti-aircraft fire.

Just a few minutes ago, his younger brother was a bombardier serving on another Type 1 bomber.

The bomber was right in front of Sakai and was hit by more than a dozen 20mm shells in succession. The entire right wing of the plane was torn off by the explosion.

His brother was close to the broken wing at the time, and the strong airflow directly blew the poor guy out of the fuselage.

It kept spinning in the air and falling towards the ground. He didn't have time to put on the parachute pack. Right in front of him, his brother fell from a height of 3000 meters, and the only outcome was death.

Sakai has gone crazy. He cannot accept that his brother died in front of him, and that he was dying step by step in a very sober state.

The thought of that kind of torture is enough to make one's hair stand on end. Sakai couldn't stand the stimulation and completely lost his mind.

All he wanted now was to avenge his brother, and he needed to destroy those damn anti-aircraft positions below, even if it meant dying together with him.

The building guarded by Cao Dading was the No. 1 Machinery Factory in North China. Of course, this name was thought up by Zhujiao.

In fact, he spent a huge amount of attention points in the system to exchange for more than a dozen machines of various kinds, and then built a huge factory here, and stuffed all these machine guns, which were still very advanced in this era, into it.

We finally built this machinery factory, which is the result of everyone's hard work. How could we let the Japanese bomb it?

"Cannonballs! Load the cannonballs quickly!"

After stepping on the launching pedal, no shells were fired. Cao Dading then realized that the shells were empty and the entire ground was covered with shell shells emitting golden glow!

"Here they come!" A young man who looked only in his teens came over with difficulty, along with an old man who looked to have already had gray hair, carrying a box of 20mm anti-aircraft shells.

"Professor Chen! Why are you here? You are my dear! Er Gouzi, who told you to let Professor Chen help you carry the shells?"

"If anything happens to Professor Chen, the commander will skin you alive!"

Cao Dading recognized at a glance that the person carrying the shells with Ergouzi in front was Director Chen, the director of the No. 1 Machinery Factory in North China.

Director Chen was a professor in the Department of Mechanical Engineering at Huaqing University. After the Japanese occupied Peking, he was unwilling to work for the Japs.

So he returned to his hometown in Shanxi Province to see if he could find a job at Yan Laoxi's Tai Y Arsenal to support the war on the front line.

But later, the Japanese invaders entered Shanxi Province, the provincial government was lost, and the military factory was occupied by the Japanese invaders.

Professor Chen had to return to his hometown in Guancenshan as he was unemployed again. This time, Wang Chun came to Guancenshan to establish a base and accidentally learned that there was such a great man in the area.

The natural result was that this technological giant was invited to serve as the first factory director, but everyone was used to calling him Professor Chen.

Professor Chen, who had been working wholeheartedly with the workers and students these days, was forcibly pulled out of the factory by security guards only after the shrill air raid alarm sounded.

Watching the Japanese bombers dropping bombs in this area, and seeing that my beloved factory and the new machines inside might be destroyed by the bombing, I felt very angry.

So Professor Chen took advantage of the fact that no one was paying attention and ran to the air defense position alone to see if he could help.

They happened to see the skinny Er Gouzi dragging a box of shells with difficulty, so the old and the young began to work on building the fire.

The entire air defense position was filled with smoke and it was impossible to see who was on the opposite side. In addition, no one recognized this skinny old man who lay in the factory every day.

The reason why Cao Dading got to know him was because a 20mm anti-aircraft gun had a problem some time ago, so they sent the gun to the machinery factory for repair. It was then that they had the honor of meeting this unprepossessing, thin old man, who turned out to be the director of this large factory.

"Hey! Aren't you Xiao Cao? Why are you scaring Gou Wa Zi? I took the initiative to ask to help him carry the shells!"

"Don't just stand there, the shells are loaded! Why don't you fire the cannon? Can you? If not, let the old man do it!"

Professor Chen installed shells on the anti-aircraft gun with familiarity, then suddenly slapped Cao Dading who was still in a daze and asked him if he could do it!

Because the Japanese bomber was ready to dive into the North China No. 1 Machinery Factory on the ground.