Our trip is not ordinarily long.

"Seal City, it's close to here." Xun Bishan said: "This is the map left by my ancestors, and this is the current map. ”

Xun Bishan said as she unfolded two maps and spread them side by side on the table, one of the newer maps was the current one, and there was a yellowed hand-drawn version of the map.

"It's modern paper, right?" Zheng Chao asked, looking at the old map.

"The original is gone, this is what my grandfather drew according to the original." Xun Bishan took out her pen and circled a location on the new map.

Circled by her was the word 'Xi'er', which is the capital city in Suba Province of Mongolia.

Xun Bishan has never been to it either, her grandfather has warned her since she was a child not to look for that place, she is also very obedient, and has always regarded that place as a forbidden place.

The route of the old map marker is very detailed and clear, and there are annotations, which seem to be afraid that others will not find that place, and it does not seem like an attempt to warn future generations not to go.

"The population over there is small, and the threat of zombies shouldn't be big." Long Tao looked carefully at the old version of the map and said.

"The real danger is inside the source stone mines." Xun Bishan turned the old version of the map over, and we found that there was a map on the back of the map.

This picture depicts specific environments, such as dense passages like spider webs, complex underground river systems, and most notably the bizarre creatures depicted on them.

It looks like a post-apocalyptic mutant beast, and the source stone affects the creatures around it, which I deeply understand, and the blue bug that once bit me is the best proof of this.

"It's these creatures, they attack the living like crazy, and these plants, the harmful gases in the cave." Xun Bishan pointed to several places on the map in a row.

"So you need an adequate supply of oxygen?" Gu Yu asked.

"Yes, due to the underground structure, these harmful gases cannot be discharged, people need to bring oxygen cylinders or air filtration devices to enter, and the straight-line distance from the entrance to the area where the ore is located is only a few kilometers, but the terrain below is complicated, and there are many detours." Xun Bishan used the pen cap to go around the labyrinthine passage a few times, "Even in this era, if you want to reach the area where the source stone is located without casualties, you need a lot of manpower and material support, and only the official can do it." ”

"With an air hood and a teleportation device, you can solve these problems." I say.

"At present, it seems to be the case, but we can't take it lightly, the person who came out alive said that they encountered many unexplained phenomena in it, such as a person suddenly disappearing out of thin air, right in front of their eyes."

"Didn't show up again?" Zheng Chao asked.

"No, so this danger is not depicted on this picture, because he himself can't describe the scene."

"Could it be a gap between time and space?" Long Tao said on a whim.

"I thought so, too, but it shouldn't have been, they were resting, one next to the other, just to prevent anyone from going missing."

"So someone has gone missing before?" I asked.

"Yes, and when everyone was eating together, none of them paid attention, and when they gathered after eating, they found that there was one missing."

"And then one less after they all came together?" Zheng Chao asked curiously as if listening to a horror story.

"This time it was clear to everyone that the man had suddenly disappeared into thin air."

"And then? Is anyone else missing? Long Tao's eyes widened and waited for Xun Bishan to answer.

"Yes, himself." Xun Bishan's words stunned us all, and she immediately explained: "On the seventh day after he went back, he suddenly disappeared, and my grandfather was talking to him face to face at that time. ”

"So the danger is not these passages, monsters and poison gases at all, you mean this kind of ...... Disappear? I asked suddenly.

Xun Bishan nodded lightly, "Yes, it's the kind of thing that will follow you anywhere and disappear." ”