At this time, Wang Yuan and several people were still walking along their endless passage, which was covered with thick dust, and except for the footprints of four people, no traces of other people's activities were found.

"When is this a head...... Qi Zhuang complained.

"Zhao Bin, how long have we been gone?" Wang Yuan asked.

"It's been more than forty minutes." Zhao Bin looked at his watch and said.

"What? It's only been forty minutes! I feel like I've been gone for a long time. Qi Zhuang said.

Wang Yuan looked at the faint blue light and rubbed his face with his hands, and said, "We have to speed up our pace, we will go crazy here if we continue like this." ”

"My legs are a little sore, let's take a break." Xiaoying showed a tired look.

"Why don't we stop for a bite to eat, I have something to say to you." Wang Yuan said.

After this half-day of tossing, several people are a little tired both mentally and physically, and the environment itself is easy to make people feel depressed and breathless. Wang Yuan stood there and closed his eyes, trying to feel if there was any wind passing through the passage, but he didn't notice it.

"Guys, the road ahead may be fraught with danger, but no matter what happens, let's not leave anyone behind, you know?" Wang Yuan said.

"yes, I see." Qi Zhuang said.

"Don't worry." Zhao Bin said.

"We have to leave as soon as we finish eating, because all the food is here, so if it's really like Uncle Liu said, we have to find that exit as soon as possible." Wang Yuan said. "One more thing I've always wanted to ask you, who touched those two piles of rocks at the bottom of the square lake outside before you came in?"

Qi Zhuang and the three of them all shook their heads, indicating that they had not moved.

"Then we're being followed, and if someone knocks down the rocks after you come in, the exit will probably close immediately." Wang Yuan said.

"Could the city Uncle Liu said be an underground world built by the people of the Underworld?" Zhao Bin said.

"Let's leave that alone, as long as we can get out, then this is a big discovery." Wang Yuan said.

After a few people had eaten, they began to set off, and after walking for a while, they found that there was a stone staircase leading down one step at a time in front of the passage, which meant that it was very likely that this passage led to the underground ancient city, which also made the originally tense nerves of the four people relax slightly.

"The stones on Yansheng Mountain are very hard, and it seems that these passages are all carved out by hand little by little." Zhao Bin said.

"I don't know how many laborers will die here." Wang Yuan said.

"It is said that when Qin Shi Huang built his mausoleum, he used 700,000 laborers, and we still don't know what kind of scale of the project is under Yansheng Mountain, but if it is really as Uncle Liu said, there is a city underground, then the amount of work can be imagined." Zhao Bin said.

"Is it really just to escape the war? This is not a wise move...... Wang Yuan said.

"That's probably just a legend, because it's impossible for humans to survive underground for long anyway." Zhao Bin said.

"But...... These lights are incredible. Xiaoying looked at the blue light and said.

"It's the dirt that's glowing, and it must have something luminous mixed in." Wang Yuan twisted a small handful of soil from the ground and said.

"It's like we're robbing a tomb, and I don't know if there's any treasure ahead." Qi Zhuang said.

A few people walked down the stone staircase, and the passage gradually widened around it, and after about twenty minutes of walking, several people reached a place that looked like a hall. The hall is a square flat area about fifty meters long, with many passages on both sides, and the top is pitch black, with occasional blue flashes. Walking into this hall through the narrow passage, the four of them felt that they had instantly become small, as if they were in a deep cosmic space, surrounded by starlight.

"With so many roads, which one should we take?" Qi Zhuang looked at the passages on both sides.

"Look, there's a picture on the wall." Zhao Bin said.

Zhao Bin pointed to the stone wall in the distance, the wall was painted with dense blue lines, and if you carefully identify it, you will find that there seem to be people, boats, and waves.

"Let's go over and see." Wang Yuan said.

A few people walked in to find that the paintings on the walls had been carved into them, and the cracks in the stone were filled with glowing earth, which dried up as if it had been embedded in it. There are many murals, arranged horizontally, as if telling a story.

The painting in front of me shows a man who seems to be kneeling to an emperor-like figure, surrounded by two rows of people who seem to be civil and military officials, with different expressions, some seem to be surprised, and some are smiling.

"Do you remember what the sorcerer told about the entrance to the underworld of Hades VI in that story?" Wang Yuan looked at the painting and said.

"No, the man is...... Xu Fu. Zhao Bin looked at the paintings below and said. Come and see this one. ”

Wang Yuan realized that Zhao Bin was already looking at the back paintings, and he walked to Zhao Bin and saw the painting he said. This painting depicts the scene of the emperor and his officials sending a mighty fleet out to sea on the seashore.

"Who is Xu Fu? I think it's a bit like Zheng He going to the West......" Qi Zhuang said.

"Haven't you heard the legend about Xu Fu's eastward crossing?" Zhao Bin was a little surprised.

"I seem to have a little impression of the word Xu Fu Dongdu, and I don't know anything about the rest." Wang Yuan said.

"Legend has it that when Qin Shi Huang toured eastward, he came to Zhifu Island in Yantai, Shandong Province, and saw that there were mountains hidden at the junction of heaven and sea in the distance, like a fairyland, so he was very curious. At this time, a monk wrote to Qin Shi Huang, saying that there are three immortal mountains in the East China Sea: Penglai, Abbot and Yingzhou, which are inhabited by immortals, and if you can climb the immortal mountain, you can ask the immortals for the elixir of immortality. Qin Shi Huang was very happy when he heard this, and according to Xu Fu's request, he prepared a large number of ships for him, as well as boys, girls and other rare treasures for him to go to sea to seek medicine. Zhao Bin said.

"Immortality is probably the dream of every emperor." Wang Yuan said.

"Legend has it that Xu Fu failed the first two times, and never came back after the third departure, and it seems that Xu Fu finally arrived in Japan, bringing advanced technology and rice there." Zhao Bin said.

"Are you saying that this mural depicts the scene of Xu Fu's eastward crossing?" Wang Yuan said.

"Qin Shi Huang is really stupid, he has been deceived by Xu Fu so many times, and he still believes him." Qi Zhuang said.

"Young man, if you look at all the murals, you'll see that you're wrong." A word came from the side passageway, followed by the footsteps of some people.

"Who's talking?" A few people haven't reacted yet.

"Good...... It seems to be coming from over there. Xiao Ying pointed to the passage on the side of the hall with some trembling, where several people had already walked out of one of the passages.

"Not good!" Wang Yuan's first reaction was that these people must have come before them.