Aki quickly followed. He slowly got into the tube and slid down. The pipes were filthy, dark, and seemed to never end. Aki could see many other pipes extending sideways, but none as huge as theirs. Twisting, spinning, plummeting. He knew he had slipped far deeper than the school and the dungeons. He could hear, behind him, the sound of Harry and Ron falling around the corner with a thud. Soon after, the pipe stretched out horizontally, and Aki slipped from the end of the pipe with a "bang" and landed on the wet floor of the stone underground tunnel. The underground tunnel is large enough for a person to stand and walk, and everything is pitch black. Lockhart stood up not far away. His body was covered in slime and his face was as pale as a ghost. Harry stood aside, waiting for Ron to come whizzing out of the pipe. "We must be miles away from school." Harry's voice echoed in the dark underground tunnel. "Maybe at the bottom of the lake." Ron said, looking at the dark, sticky walls around him. Several people turned to stare at the darkness ahead. Ash waved his wand, and then the tip of the wand began to light up. "Let's go." He said to Harry, Ron and Lockhart. They started to set off, walking in the wetland, the sound of their footsteps was extremely loud. The underground tube is so big that they can only see a short distance ahead. In the wand's fluorescent light, their shadows were reflected on the wall, looking extremely terrifying. "Remember," Yaxi whispered as they moved forward cautiously, "if you hear any movement, you must immediately close your eyes and run away" But the underground tube was as quiet as a lonely grave, and the first thing they heard was An unexpected sound was the cracking sound of Ron stepping on the mouse's skull. Ash lowered his wand and looked at the floor, only to see the bones of small animals scattered on the floor. Yaxi tried hard not to imagine what Zhang Qiu would be like. He led the way through a bend in the underground tunnel. "Harry, there's something ahead" Ron shouted hoarsely, grabbing Harry's shoulders. They were stunned and watching. Harry could only see the huge, curved outline of the thing, lying at the corner of the underground tunnel, not moving. "That's just the snake skin that has faded!" Yaxi said helplessly, turning around and looking at the person behind him. Lockhart pressed his hands to his eyes. Harry turned back to look at the object again. Yaxi stepped forward, and what the glimmer of light flashed across was a piece of python skin, disgustingly bright green, with wax curls, lying empty on the underground floor. The python that shed this skin must have been at least twenty feet long. "Ah!" Ron sighed weakly. There was sudden movement behind them. Lockhart's knees were weak. "Get up!" Ron said sharply, pointing his wand at him. Lockhart jumped to his feet - he rushed towards Ron and tackled him to the ground. Harry rushed forward, but it was too late. Lockhart grabbed Harry and stood up straight, panting, holding Ron's wand in his hand and smiling slightly. "The adventure ends here, kids!" he said. "I will take this skin and go back to school to tell them that it is too late to save the girl and you are going crazy at the sight of her unrecognizable body. Say goodbye to your memories!" Lockhart raised Ron's wand above his head and shouted, "Forget it." He must have forgotten that there was something wrong with Ron's wand, because the wand was with him. The head exploded. Aki took the opportunity to run forward, sliding across the snake skin and avoiding the huge rocks falling from the ceiling of the underground tunnel. In an instant, he was already standing upright, staring at the solid surface of the gravel. "Harry Ron!" Ash said. "Are you okay!" "I'm here!" Ron's deep voice came faintly from behind the boulder. "I'm fine!" "I'm fine too!" Harry said, "But Lockhart was hit by a curse!" At this time, there was suddenly a dull thumping sound and a painful cry of "Ouch!" It sounded like Ron kicked Lockhart in the ribs. "What to do now?" Ron said desperately, "We can't get through. It will take a long time" Aki looked up at the ceiling, and a huge crack was exposed on it. As Ron said, if you spend some time, you may be able to open the passage, but it seems that now is not a good time to try it - what if the entire underground tunnel collapses? There was another heavy blow and "ouch" behind the boulder. "Uh, you wait over there," Ash shouted to Ron, "I'll keep going and I'll be back in a moment." "But!" Harry hesitated. "I'll try to move some rocks,"?En tried his best to keep his voice steady. "Well, that's a good idea! Be careful, I'll be back soon!" Yaxi said, and then he passed the giant python skin and set off alone. Soon, the faint sound of Ron and Harry laboriously moving stones faded away. The underground tunnel turned round and round. In the darkness and silence, the sound of Axi's footsteps was particularly obvious. Things happened so suddenly that Aki was unprepared, so it would be good to at least bring two roosters. But alas, he only has an eyepatch. When Axi climbed through another bend, a solid wall suddenly stood in front of him. Carved on the wall are two intertwined snakes, with eyes set with huge sparkling emeralds. Aki walked forward, imagining the truth among these stone snakes, their eyes lifelike. He guessed what he should do next. He cleared his throat, his emerald eyes seeming to flicker. "Turn on." Ash said in a low, weak hiss. This is what Harry just learned. After saying this two or three times in succession, the wall cracked and the two snakes separated. The two half walls slid apart in a balanced manner and disappeared without a trace. Aki took a deep breath and walked in. Aki stood at the end of a stone room. The stone chamber is quite large and dimly lit. More stone pythons are wrapped around the towering stone pillars, rising up and disappearing into the dark ceiling. Aki stood, listening to the chilling silence, frowning and looking around, then grabbed the wand and slowly advanced between the pillars carved with boas, each step causing an echo in the walls. Yaxi squinted his eyes and put the eye mask on his forehead, ready to pull it off if there was any movement. The empty eye sockets of those stone snakes seemed to be always spying on his every move. A twitch in his abdomen would make him think there was some movement. When Yaxi reached the last pair of pillars, a sculpture as high as the stone chamber jumped into his sight. The sculpture stands against the back wall. The huge face on the sculpture is quite ancient, like a monkey, with long sparse beards hanging down to the bottom of the floor-length stone robe. A figure is lying there on the floor in front of the sculpture, motionless, and there Next to him, there is a black notepad!