"Wait!" Bai Lotian stopped, "Wait a few more minutes and see if there is any oxygen in there." Bai Lotian took out a lighter, lit a candle, held it, and probed in.

The reef is connected to the sandy slope on the shore, and the engineers cleverly hid the hole between the two reefs, a secret that remained buried here for decades until the arrival of the two men.

The space inside the cave was much larger than they had imagined, about two meters high, with room for three people to pass side by side, the floor was covered with pebbles, the floor was full of sewage, damp and stuffy, the walls were cement, and every ten meters there was a wall lamp embedded in the wall, the lampshade was already in tatters, revealing the fluorescent lamps full of dust inside, and the cast-iron arms were rusty and falling off.

Bai Lotian walked in front with a candle, and the flame of the candle was only slightly smaller, indicating that it was not completely closed, there was oxygen in it, and the hole was connected to the outside.

The two walked along the tunnel, carefully observing the surroundings, discussing in a whisper, until they came across the intersection, and according to Bai Letian's memory, marked the route with a watercolor pen so as not to get lost.

"Ahh

Bai Lotian was shocked, turned to look at him, his arm shook, almost extinguished the candle, and hurriedly covered it with his other hand. Paul was jumping and shining the light of his flashlight on the corner, his face pale, breathing in the air and pointing in that direction.

A huge mouse, about a dozen pounds, with black-gray fur, pointed teeth, eyes that turn and shine, long beard, and a sniffing nose.

Paul was so frightened that he made a "whoosh" sound, and he stood upright with his hands in front of his chest, he had probably never seen such a large mouse.

And for Bai Lotian is different, his home is under the hillside, he has lived in the mountains since he was a child, he has seen a lot of small animals in the mountains, and this kind of mouse has also been encountered, he walked over, raised his foot, and kicked at the big mouse, the big mouse "squeaked" and quickly disappeared into the darkness.

"How far is it to the exit?" asked Paul, touching the sweat on his forehead.

"It's hard to say. The drawings are not very clear, and after such a long time, the situation may change. ”

Paul didn't speak, shrugged his shoulders, and stretched out his hands with a helpless look.

The tunnel was dark and deep, with no end in sight, and the two of them kept wiping their cheeks, the air was full of musty acid, and from time to time the water on the ground splashed, and huge rats jumped out and sniffed at their feet, and gray bats flew up from a corner, and there was a sound of "fluttering".

"How far does this have to go?" Paul asked again in frustration.

Bai Lotian stopped, took out the drawing, and looked at the drawing carefully by the light of the candle in his hand, "Soon! There will be an intersection ahead, be sure to make a road signpost, and then we turn left, and it will be the road leading to the basement of Yuehua Palace." ”

"Basement?"

"Yes. It used to be used to hold prisoners, but now it's probably empty. Bai Lotian explained as he walked with a candle.

The two whispered as they walked along the tunnel, and from time to time a mouse jumped out of the way, but they were used to their friends in the dark.

About half an hour later, after three more turns, the water droplets on the roof of the tunnel dripped on their foreheads, and the soles of their feet were covered with wet and sticky mud, and the sour smell of corruption rushed to their mouths, so they had to close their lips tightly and express their meaning in mute.

The eyes of the two lit up, the space in front of them instantly became larger, about forty square meters, the walls were painted with maps of the world, the United States and New York, the colors were blurred, two black iron tables were placed on one side, dusty, peeling paint, rusty, the surrounding walls were hung with electric lights, lying there lifelessly, wires were firmly embedded in the corners of the wall, there were iron doors in all four directions, not locked, not closed, the doors were written separately: headquarters, material center, exit, backup exit. The two of them were standing under the door marked "Exit".

Bai Lotian raised the candle in his hand, looked up at the sign hanging on the wall, and muttered as he walked, his eyes moving rapidly. Paul used a flashlight to shine back and forth, his eyes full of amazement, and his mouth was full of admiration.

"It's awesome! Paul sputtered.

"Cut, I don't like it, it's terrible, I'd rather stay in the ocean. ”

Bai Lotian walked into each doorway, looked at it again and again, and made obvious marks with a pen, "Yes, this is the turnover hub of the tunnel, which is exactly the same as marked on the map." ”

"Where are you going?" asked Paul.

"Of course, it's the command post, it's the current Yuehua Palace. Bai Lotian raised his eyebrows, revealing a relaxed and victorious look.

Paul tightened his back with his bag, held out his fingers, and made an "OK" gesture.

The tunnel leading to the command post was much drier inside, the walls were slightly damp, and the dust floating in the air made the nostrils of the two of them itch, and they felt like they wanted to sneeze, and the expressions of the two of them trying to hold back were very funny, and a smelly and slightly sweet smell wafted over, as if the compressed food of decades ago had rotted.

Paul pulled the drawstring of the wall lamp on the wall, and it "snapped", but it could still be used, and even Bai Lotian couldn't help but admire Lao Mei from the bottom of his heart.

Walking and walking, the road has come to an end, there is no door to go out, let alone a hole, on both sides are the walls of the tunnel, below is the hard cement floor, and the top is also cement.

The two glanced at each other, with puzzled looks in their eyes, and asked in unison.

"What should I do?"