As soon as Feng Xiao entered the universe, a blue light flashed, and a green crystal bead wrapped in blue light appeared, which was the Chengying Bead.

Cheng Ying Zhu slowly flew towards Feng Xiao's cockpit, and Zhou Tong hurriedly opened the cab and took Cheng Ying Zhu in.

With a stretch of his hand, Zhou Tong grabbed the Chengying Bead, and the mana poured in, and a green light swept forward in a fan-shaped shape centered on the phoenix flute.

The green light swept by, and the two of them saw that not far ahead, there were densely packed with various cracks, large and small, and they were all spatial cracks.

This is not the most dangerous, the most dangerous thing is those spatial cracks, more than half of them can disappear and appear for a while, and they seem to be irregular.

After observing for more than an hour, Zhou Tong controlled Feng Xiao to make a gesture to Fang Huairan, and returned to the Great World Mirror in a blue light.

After leaving the phoenix flute, as soon as he fell and stood still, Fang Huairan asked with concern: "How is it, are you okay?"

Zhou Tong smiled and said, "What can happen! It's okay, don't worry! I observed, except for the area where those meteorites and asteroids are located, there are no spatial cracks, and there are spatial cracks everywhere, and the appearance and disappearance of cracks are also irregular. ”

"Well, I also saw it, I just tried it again, and if I go back to here, the speed can be two-thirds of the speed of the full flight speed of the Great World Mirror, and according to the previous calculations of the two of us along the way, the speed of retreat is proportional to the distance from the light source, and the scale factor is still a constant. Fang Huairan said.

"Then it seems that the light source could really be some high-density black hole-like celestial body!Next test the space orb?" Zhou Tong nodded and asked.

"Hmm!" Fang Huairan confirmed as he raised the space orb in his hand and said: "I just tried it, the mana in the late Yuan Infant stage can barely drive this bead, and there is no need for essence blood, but after using mana to urge, the time to urge is relatively long, and it is not so flexible after urging, but for the two of us, it is just used to open the way, and it is nothing." ”

"It's good that you don't need a blood sacrifice, originally I planned to combine the two of us with a blood sacrifice, so that everyone wouldn't need much essence blood. Zhou Tong smiled with satisfaction.

"Then let's plan a route to bury the bait, and make sure that it is farther than the Avatar Ancestor who came here before, so that when the Yin Yang Ghost Dragon turns around, it can be ground alive by the spatial crack. Fang Huairan said.

Zhou Tong didn't answer immediately, but blinked, frowned slightly for a long time, and had an idea in his heart before he said: "You can't just bury it in one place, if the Yin Yang Ghost Dragon eats the bait, it doesn't leave from the direction we came in, but in other directions, you and I won't have the energy to search for all this weirdness when we go." ”

Fang Huairan thought for a while, and said in agreement: "You're right, if you leave in a different direction than us, even if you are worn to death by the spatial crack, you and I can't find the body, and you should control the route of the Yin Yang Ghost Dragon leaving."

You said that we are from the outer circle to the inner circle, in the direction of a radius through the spherical light source, arrange several yin and yang beads, so that the yin and yang ghost dragon must be the first to smell the breath of the outer circle of yin and yang beads, enter from the outside and inside, and when you go out, according to inertial thinking, it is estimated that you will also go out from this road, you and I will come in along this road again, won't we be able to find the corpse of the yin and yang ghost dragon who has been grinded to death!"

"Your method is good, but there needs to be a premise for success, that is, when the Yin Yang Ghost Dragon goes out, he still takes the original path, and pins his hopes on the Yin Yang Ghost Dragon, I think it's still not so reliable.

Machiavelli once said: If you have to make a choice between being feared and respected, a leader must be fearful. Because being respected depends on the emotions of others, and being fearful is your own active choice. It is better to rely on yourself than on others. (Drag the text ^_^)

So we can't put our hope on the Yin-Yang Ghost Dragon, I just thought of a way, that is, we will arrange the Yin-Yang Beads into a fan-shaped, with fan-shaped sharp corners close to the light source, so that no matter which direction the Yin-Yang Ghost Dragon enters from, when he eats the innermost Yin-Yang Beads, he will find that there are Yin-Yang Beads on the outside, so that the path they return will be within the fan-shaped area controlled by us, what do you think?" Zhou Tong said in one breath.

Fang Huairan thought for a while and added: "It's feasible, as long as the distance of the yin and yang beads placed in the direction of each arc of the fan is adjusted farther than the yin and yang beads placed in the radius direction, then it can ensure that the yin and yang ghost dragon will always go along the radius to the inner circle when it enters, and will not eat other yin and yang beads on the arc along the circumferential direction." ”

"Well, I think so too, and the yin and yang beads on the arc should be placed two or three times farther than the distance. Zhou Tong said.

"Okay, then it's decided, it's sure to be foolproof, everything is up to me!" Fang Huairan said excitedly.

"Okay, when you find a suitable meteorite or asteroid, dig a hole and place the Yin Yang Bead, and then use the array flag you refined to arrange a simple warning formation, if the formation is broken, then you will know that the Yin Yang Bead has been taken out. Zhou Tong said.

Zhou Tong said this because the two of them have not been idle for more than two months, Fang Huairan refined some early warning array flags and tokens according to Zhou Tong's requirements, and then used the array flag to cover the yin and yang beads, once the formation is broken, the tokens will be shattered, so that the two of them can know that the yin and yang beads have been taken away.

Moreover, each token is numbered, so that the two of them can better depict the whereabouts of the Yin Yang Ghost Dragon according to the order of fragmentation of the array disk.

The reason why he had this idea was because Fang Huairan remembered a monster science fiction movie he had watched before, that is, when the spy satellite was not working, the sensor signal in the buoy floating on the sea and measuring ocean currents was used to determine the location of the monster.

"Also, we have to always determine the speed of the Great World Mirror when we go back, we must go back before the next duty, otherwise, we can't explain it. Fang Huairan added.

Zhou Tong nodded and volunteered: "I'll go and arrange, you will support me in the mirror of the world!"

Although Fang Huairan didn't want Zhou Tong to take risks, he still nodded, and suddenly thought of something, and asked, "Start arranging from here?"

Zhou Tong thought for a while, and while drawing a figure with mana, he pointed and explained: "I plan to make a ninety-degree fan, that is, a quarter circle, and the direction we come to is the middle radius that divides the entire fan into two halves, and arranges yin and yang beads on every twenty-two and five-degree radius to the left and right, so that a total of five radii are arranged." ”

"Where is the vertex of the fan-shaped circle?" Fang Huairan asked.