(Friendly reminder: this chapter is a bit brain-burning, and casual readers skip it on their own.) ）

After figuring out the current situation, Ren Xiao opened the map first, and unexpectedly found that the map was black, in addition to the marked southeast, northwest, and northwest, there was also a 'forbidden' word written in the middle, and a row of small characters was also displayed below this word: "In the territory of this god, the map system only shows the direction." ”

"What the hell is this..."

Ren Xiao turned off the map system and looked around, the white land was endless, except for the snow and snow, and because of the pure white sky, even the distance in the horizontal line of sight was white, and the field of vision was white, without anything that attracted attention.

"This space looks a little weird, there's nothing in the field of vision, is it possible... Is there a mystery hidden on the ground? ”

Thinking of this, Ren Xiao looked down at his feet and found that the snow on the ground was not too deep, five centimeters.

Pushing away the snow with his feet, he found that the snow was a hard white solid, not like ice, Ren Xiao squatted down and touched the white solid on the ground with his hands, the touch was cold, a little rough, even if there was no snow on it, people would not slip on the ground, and then knock on it, 'dong dong dong' is a very dull sound, there should be no hidden underground space below.

After checking the ground, Ren Xiao stood up with a puzzled expression, this world is silent, there is anything noticeable in the field of vision, and there seems to be nothing wrong with the ground, it looks like people don't have a clue.

"System, can you give us some hints about the exit from this space?"

"No, it's beyond the scope of the Q&A system."

Answering as expected, Ren Xiao touched his chin and looked at the snow in front of him, it turned out that the snow was not designed because it was non-slip, it was very likely that the snow was used to make a trick, and there might be something hidden under the snow around him.

I stepped tentatively, and it was very solid, and there was nothing under the snow, which was normal.

Ren Xiao took a step by step tentatively, and after taking a few steps cautiously, he gradually relaxed, walked forward boldly, and after walking for a while, he changed to a trot, until he finally accelerated with all his strength.

Ten minutes later.

"! What's going on with this Nima? Is there nothing in this place? ”

Ren Xiao slowed down and stopped, panting slightly: "It shouldn't be, there is an exit in this space, there should be a corresponding hint for the player." As he spoke, he opened the character attribute bar, and Ren Xiao found that his basic attributes had not decreased after entering this space, which meant that he had run more than ten miles in the past ten minutes, but he had found nothing.

Panting, Ren Xiao grabbed his hair in distress, then crossed his hands on his waist and raised his head inadvertently, and after that, Ren Xiao was stunned.

In the white sky, just above the head, there is a row of backward footprints!

Because Ren Xiao was far away from the footprints, those footprints seemed to him to be only as big as the nail of his little thumb, but as long as he looked closely, those footprints could still be seen clearly, like...

His own footprints!

Suddenly, Ren Xiao turned around in shock, looked at the snow behind him, his footprints stretched into the distance, and at a glance, he couldn't see the end of the footprints.

"! This..."

Looking up at the footprints in the sky, the row of footprints in the sky also extends into the distance, with no end in sight.

At this moment, on the vast white earth, the footprints in the sky and the ground show a "?" In the opposite direction, the source of the footprints in the sky is above Ren Xiao's head, and the end of the footprints in the snow is at Ren Xiao's feet.

Ren Xiao was completely confused by the scene in front of him, Morbius Ring? Wrong! Not in line with the situation in front of him, he turned around and tried to take two more steps forward following the footprints he had taken before, looking towards the sky, and the footprints in the sky had taken two steps back, still above his head.

At this time, Ren Xiao frowned and took two steps back, stepping on the original footprints, looking up again, the footprints in the sky had not changed in the slightest, and their source was still directly above the end of the footprints that Ren Xiao had stepped on underground.

Ren Xiao took another four or five steps back, but the footprints in the sky still did not change.

After that, Ren Xiao walked back to the front of the underground footprints, and took two more steps forward, and the footprints in the sky took two steps back, appearing above Ren Xiao's head.

"Hey! What is the mechanism? ”

Ren Xiao's face was confused, he no longer moved in a straight line, moved two steps laterally, and looked up, the footprints in the sky had not changed.

His brows furrowed, and after Ren Xiao moved sideways, he took two more steps forward, and the footprints in the sky still remained unchanged.

Running back to the front of the previous footprint again, he took two steps forward, and the footprints in the sky took two steps back again.

"Oh my God! This...... Calm down! Calm down! ”

Ren Xiao swallowed and spit, sat on the snow, closed his eyes and tried to calm himself.

Thoughts raced.

First of all, after coming to this space, the footprints in the sky are the only anomalies in this world, and they are definitely the key clues to leave this space.

This meant that in order to leave this space, it was necessary to figure out the mechanism by which the footprints in the sky appeared.

Second, it is certain that the mechanism of this footprint has nothing to do with the Morbius ring, nor does it conform to any known physical model of space.

From the previous experiments, it can be found that the footprints in the sky are only related to the footprints on the ground that are parallel to it, and the rule is that as long as the footprints on the ground parallel to it advance, it will retreat.

Although I am the cause of the earthly footprints, the heavenly footprints do not change the rules of retreat with other changes in my steps.

Suddenly, Ren Xiao opened his eyes and ran back along the footprints he had stepped on parallel to the sky.

Fifteen seconds later, as Ren Xiao stepped out, the footprints in the sky suddenly disappeared!

Ren Xiao's face was surprised, his footsteps paused and retreated, but the footprints in the sky still did not appear.

"What's the situation?"

Ren Xiao was confused, and then ran back, and after running for another fifteen seconds, Ren Xiao suddenly stopped, because the footprints he followed were broken very abruptly, and the white snow in front of him, the footprints were gone?

"No, I ran for about ten minutes before, and it is impossible to run such a short footprint!"

As he spoke, the lightning and thunder in Ren Xiao's mind suddenly thought of something, looking at the white snow under the ground in front of him, Ren Xiao slowly leaned out his feet and took a step forward.

After that, look up.

It was the same as when Ren Xiao found the footprints in the air earlier, there was once again an extra footprint in the air towards Ren Xiao's back, and the source of this footprint in the air was still directly above Ren Xiao's head.

Looking at the footprints in the air, Ren Xiao thought of something, and slowly turned around to look at the ground behind him, but saw that the two footprints on the ground just now were left behind.

Ren Xiao's face froze instantly: "Could it be ......?"

Quickly stepped forward two steps, the footprints in the sky took two steps back, the source was still above Ren Xiao's head, Ren Xiao moved two steps horizontally, and the footprints in the sky did not change.

"I kind of understand the mechanism of this footprint."