Please recommend an American novel about two little boys digging underground and getting to know the underground human race.

" Underneath the Legends of the Underground World " is a light novel written by the author every night. It's a derivative Doujinshi novel. The general plot of this novel is as follows: A long time ago, Earth was ruled by two races, humans and monsters. One day, the war drums shattered the peace between the two sides, and under the human's almost massacring invasion, the humans won a complete victory. The humans drove the monsters underground and set up a powerful magic barrier to trap the monsters underground at the foot of Mount Ipot. Legend had it that no human who had climbed Mount Ipot had ever returned alive. In the year 201X, a human girl climbed up Mount Ipot and found a big hole. However, she accidentally tripped on a vine and fell into the hole… ---------------------------- The Catacombs Game: I Can Kill Monsters and Obtain Attributes was a novel written by the author, Three Dreams of Child's Words. The general plot of the novel was: When he descended into the Catacombs world, monsters were everywhere. The world seemed to be made up of rooms. Everyone had a shovel in their hands that was used as a key. By digging, they could reach the next Catacombs. "However, you will never know what kind of danger lies in the next Catacombs. In this dark world, sometimes a demon was not necessarily a monster…Book Group: 319590627. ---------------------------- " Rebirth of the Gold Rush Era of America " was a historical novel written by the author, Diamond Seats. The general plot of the novel was: Reborn to the era of gold mining in San Francisco, the newspaper in 1848 reported that there was a gold mine in Golden Mountain, California, attracting people from all over the world to come here for gold mining. Just as William was about to venture into the west, he met the Boston team. ---------------------------- Survival in the Catacombs: Hints to Fly Me was a game system novel written by the author, Twin Sheep. The general plot of the novel was: Decades ago, the Catacombs world suddenly descended, causing panic among all mankind. Decades later, people had completely gotten used to the existence of the Catacombs and had begun to explore. A Catacombs survival reality show entered the public's field of vision. Each person had a shovel, a bottle of water, and a loaf of bread. If they wanted to survive, they had to constantly dig for supplies. However, no one knew if the next direction would be survival or death! Mo Wen was " fortunate " to be one of them. After binding to the survival system, other than the various skill enhancements, the most awesome thing was the notification function! As long as he placed his hand on the soil, he could feel whether it was safe or dangerous ahead. [There's nothing in this direction. All that awaits you is death.] [This direction is not the best choice. There are some items that you don't need at the moment.] [This direction is the most suitable for you. There are resources that can keep you alive, and there is no danger.] When the other streamers were struggling to survive and had no food to eat. Mo Wen was already sick of eating big fish and meat. While the other streamers were barely able to defend themselves and survive, Mo Wen had already begun to fully equip himself and bring his pets to conquer this unknown underground world! ---------------------------- " America 1881: A Western Legend " was a historical novel written by the author Mosaic's Melancholy. The general plot of the novel was: At the end of the 19th century, there was a Chinese name that spread in the shadows of the western United States. A treasure map, a bill, a legendary cowboy, a bounty hunter, an Indian, a Pinkerton detective, a revolver, a small western town... PS: The book is fat and can be slaughtered. [New group: 784802727] ---------------------------- " Survival in the Catacombs: Global Descent " was a sci-fi futuristic novel written by the author, the rocking cart driver. The general plot of the novel was: [New book released] The world changed overnight. A game called Survival in the Catacombs had materialized all over the world. Everyone was trapped in an independent Catacombs! If they wanted to survive, they had to keep digging tunnels and enter the next Catacombs. However, no one knew if the next Catacombs would be filled with supplies or monsters! When Bai Mu was in the Catacombs, he realized that he had a map navigation function! "Turn left. The next Catacombs will arrive at the supply point. Click to view the details of the supplies." " Turn right. The next Catacombs will have Catacombs monsters. Please click to view the details and strategies of the monsters." " Go straight. The next Catacombs will be the Mysterious Catacombs. You can open a Level 1 Treasure Chest. Please click to view the details of the Treasure Chest." While the others were struggling to survive, Bai Mu had already begun to use his excess food to trade for resources. When the others could barely survive, Bai Mu was fully armed and conquered the underground world! [Book Friend Group 1:684440623. No verification required.] ---------------------------- " Survival in the Catacombs: I Can Hear the Prompt " was a sci-fi novel written by Scholar Bai Cai. The general plot of the novel was: "There's a traveler's backpack in the Catacombs ahead. There might be a surprise hidden in the backpack." "There's a hungry beast in the cave on the left. Trust me, you definitely don't want to face it." " The underground cave under your feet leads straight to lava. If you want to take a hot bath in the raging fire, you can try digging." When they woke up, billions of people around the world were in sealed Catacombs. The first step was to use a shovel, and the resources were all dug up. However, not only were there resources in the Catacombs, but there were also many terrifying monsters. No one could guarantee whether they would encounter resources or ferocious beasts after they dug into the next Catacombs. However, Yu Cheng realized that he could hear the notification sound. He knew in advance what was in the next Catacombs. Therefore, while others were still struggling between life and death, struggling to survive for a bite of food. Yu Cheng, on the other hand, was already carrying a shovel and running around freely, frantically searching for resources…Book friend group: 820139048. ---------------------------- Extreme Zone was a mystery novel written entirely by the author. The general plot of the novel was: Everything started when I was six years old. What was hidden under the mine? What did I see with my own eyes? The sudden rat tide in the mine and the sudden earthquake in the Kuangqu completely changed the fate of every survivor. A mysterious veil is about to be lifted. Please follow me and experience a soul-stirring path of survival! ---------------------------- " Travels in the Shadow World " was a fantasy-mystery fantasy novel written by the author, Rin Hoshiishi. The general plot of the novel was: The young Venter had unexpectedly turned into an Undead creature, but he had also gained power as a price. This power caused Venter's heart to gradually change, and a figure in the darkness gradually grew. When he opened his eyes again, the dark journey had already begun and would never stop. This was a story of travel and adventure. It was a story from the human world to hell. It was a story of the protagonist from the front to the back. Friendly reminder: This book is purely fictional. If there are any similarities, count them as my copies. Since the protagonist will become the BOSS, some of his actions will not conform to the moral values of normal people. Please forgive him if he causes discomfort. ---------------------------- The Daily Life of an American Agent was a novel about urban life written by the author, Master Zuo Ci. The general plot of the novel was: Book Group: 1060948601 Ron felt that something was wrong with everything around him. First, the neighbor's wife installed a leg support for her silly son. When Mary told him about it at the dinner table, he found out that the dull boy was called Forrest Gan. On the television, the murder of the banker Andy Dufresne's wife caused a sensation. In the end, the brutal banker was sentenced to life imprisonment in Shawshank Prison. The Coopers at the dinner table were overjoyed…Until his younger brother, Shelton, was born. When he saw the demonic light of wisdom in his eyes, he was completely confused. Was he in the world of American drama and Hollywood?