promised Lei Junze again before sending the senior away. Lei Junze was still very interesting to them, and all the Dragon Source Crystals obtained were directly exchanged for Heaven Dou points for them. Of course, there is no increase in completeness for this mission.

Lei Junze had his thoughts, and he was surprised by the importance that Wang Tianyu revealed about Lan Xuanyu, and he also had the idea of deliberately befriending this junior. Therefore, within the scope of his authority, he also turned a blind eye.

The initial harvest was quite rich, enough for Lan Xuanyu and them to be promoted to the fourth level Heaven Dou. They are also likely to be the lowest level four Heaven Dou in the past. The next step is to enter the main drama, and the most critical moment is coming.

This time, Lan Xuanyu let his companions rest for twelve hours, and filled up all the supplies of the Tianyi mecha. Only then did he leave the Longyuan Star Base again. Thirty-three wings, thirty-three warplanes gathered together and flew towards the gray fog area.

The fighters were flying high in the air, and they did not fly straight towards the gray fog area, but wandered around the periphery first under the leadership of Lan Xuanyu. Watch what's going on below.

As Lan Xuanyu expected, although the number of source dragons near the base had decreased sharply due to their cleaning, a new source dragon had already appeared in the area that had been swept away.

This source dragon is really endless!

"Everyone, turn on stealth mode. Lan Xuanyu ordered.

A faint layer of ghostly light appeared on the surface of the Sky Wing Fighter, and suddenly, the surrounding air began to twist slightly, and the Sky Wing Fighter continued to fly in the air, but only a faint light and shadow remained.

This is Tangmen's technology, and it is a new function of the Tianyi mecha after many adjustments and evolutions.

The stealth of a fighter is similar to the stealth of a battleship, both of which are invisibility effects produced by some peculiarities of light refraction. Plus add a special coating to the surface of the mecha. With this, it can block a certain degree of psychic detection, radar, and visual observation.

The Federation's newest Ghost Fighter uses this technology. Naturally, the 33-day wing fighters were equipped without hesitation. Compared with the Ghost Fighter, the Sky Wing Fighter is better at noise reduction. From the sound level, you can hide yourself as much as possible.

After turning on stealth mode, the Thirty-Three Days Wing no longer circled and headed straight for the gray mist.

The gray mist area was almost at the other end of Longyuan Star relative to the base, and even if they were flying at full speed, it took them nearly five hours to gradually get closer.

They hadn't been that far away when they had fought before. At this time, scanning downwards through the radar can reveal a large number of source dragon groups. There is no shortage of powerful beings among them.

The benefits of invisibility were evident at this time, plus they were flying at an altitude of eight thousand meters above the ground, and the source dragons below did not notice their existence.

Lan Xuanyu flew in front of everyone with his Sky Wing Fighter, and from a distance, he could see that the sky in the distance was gray. It didn't seem to be fog or anything, it was just gray-black. Judging from the information from the base, the gray is composed of metal dust, so it can be isolated from all kinds of detection.

As for how these metal dusts formed, and what they were hiding, that was the purpose of their investigation.

The distance was getting closer and closer, and Lan Xuanyu gave an order for the other Sky Wing fighters to hover and wait outside the gray fog. He had to go in and investigate on his own.

The situation inside Gray Mist is unknown, and his fighter control is the strongest among all of them, and he has the greatest certainty of retreating. Partners are on hand and ready to support.

The most suitable ones to enter the investigation are only him and Tang Yuge, as the squad leader, and also the head wing of the Thirty-Three Days Wing, Lan Xuanyu is naturally responsible at this time.

Thirty-two Skywing fighters split apart and spread out in all directions. Lan Xuanyu's Sky Wing fighter also slowed down and slowly approached the gray fog.

At the moment when his Skywing fighter plane had just entered the gray fog range, a piercing siren suddenly sounded. Lan Xuanyu was shocked in his heart, with the connection between the fighting armor and the mecha, he and Tianyi were now one, and he immediately felt that the various data of the mecha were fluctuating unsteadily. And within the gray mist, there seemed to be a repulsive force that slowed down his flight.

This is......

The Sky Wing fighter fluctuated unsteadily, and it seemed that there was a risk of falling at any time. Lan Xuanyu didn't dare to slack off, and his soul power was released outward, turning into a layer of shield to guard the periphery of the Tianyi mecha, isolating the gray mist.

Only then did the Tianyi fighter stabilize itself, but Lan Xuanyu found that his soul power was consumed extremely quickly.

Magnetic field!

In the gray mist formed by these metal fragments, there is a strong magnetic field. As soon as all electronic systems enter this magnetic field, they are subject to significant interference. In other words, it's almost a no-go zone. Mechs will be greatly disturbed here.

At this moment, a piercing scream sounded, and then, in the midst of the wave, a ray of light shot straight in the direction of the Skywing fighter.

The area covered by that light was extremely large, and Lan Xuanyu was about to be unable to dodge.

The passionate dragon groan sounded, and the Skywing fighter instantly deformed in the air, turning into the appearance of the Skywing mecha, and on the surface of the fighter, a layer of golden scales emerged, and at the same time, both fists blasted out, and the golden dragon-shaped energy collided with the beam.

"Boom-" The powerful impact force caused Lan Xuanyu's Tianyi mecha to fly backwards, and in the gray mist, a flying source dragon with a body of more than ten meters had already drilled out, and beams of light continued to shoot towards Lan Xuanyu.

Lan Xuanyu frowned slightly, he was discovered! There is no doubt that it was the cause of the gray fog. Entering the gray fog, not only was the stability of the electronic system affected, but the stealth effect was also lost, and it was discovered by the source dragon.

But this gray mist could not affect his spiritual perception, he immediately sensed that a large number of unknown creatures in the gray mist were approaching in his direction, and a sense of danger appeared instantly.

Without half a moment's hesitation, a cloud of earthy yellow light condensed, sprayed outward, and turned into a wall-like existence behind him. He himself controlled the Skywing mecha to instantly change back into the appearance of a fighter, turned around, accelerated with all his strength, and rushed out of the gray mist.

Undoubtedly, this gray mist was the home field of the source dragon, and the abundant metal elements in it made the source dragon's combat power soar, and this seventh-level source dragon was a little threatening to him just now. And in this, the control of the fighter will also be seriously disturbed, the number of enemies is unknown, and it will be detected, so exit first.

Although it was only a short time to enter the gray mist, Lan Xuanyu had already obtained a lot of useful information.

The Tianyi fighter increased his speed, and he didn't enter much, almost a violent acceleration, and he had already rushed outside the gray fog.

Rushing out of the gray mist range, he could naturally see the situation below, and Lan Xuanyu found that a large number of source dragons had gathered towards this side below. Not daring to slack off, the fighter accelerated again, soared upward, stood up towards the sky, and reopened the stealth device in the process of climbing upward.

Behind him, more than thirty Flying Source Dragons roared out, chasing after him. These source dragons turned out to be all existences above level six, and level seven accounted for the majority.

The stealth effect gradually appeared, and when Lan Xuanyu was accelerating with all his might, it was the soul power that combined with the energy of the mecha itself to speed up, and as the distance gradually widened, those source dragons lost their lock on him.

Lan Xuanyu opened the team channel, "Can you hear my voice?" He wasn't sure if his communication had been disrupted by the magnetic field.

"I can hear you. Soon, a voice returned, confirming that his communication had become normal after leaving the gray fog.