Wei Zheng was slightly startled and wondered: "What finally happened? Why don't I understand, my lord?" Wang Shichong sneered and was about to speak when he heard the sound of footsteps and Liu Heitai ran down the city with excitement on his face. Coming up, he shouted out of breath: "Your Majesty, Your Majesty, they are coming, they are coming!" Wei Zheng smiled and said: "General Liu, even you can hear the footsteps of the Tang army attacking the city from below. We are here You can clearly see that you should go back to defend the city trench. They may break through the city gate soon and you will need to fight back." In today's city defense battle, Wang Shichong unexpectedly sent Liu Heita directly down to the city without publicly explaining the mission. , just behind everyone's back and having a secret conversation with him for a long time, Wei Zheng was a little at a loss. Liu Heita burst out laughing: "Wei Zhongshu, this time we are not guarding the city gate under the city. Your Majesty asked me to guard the city gate, not the city gate." Wei Zheng suddenly raised his eyebrows in surprise: "What, Are you defending Diting? So, are you defending the enemy's tunnels from attacking the city?" Wang Shichong nodded: "That's right, I asked Heizi to defend Diting. Where have the Tang army's tunnels been dug now? " Liu Heitai wiped the mud on his face that was washed away by sweat, and said: "We are less than twenty steps away from the city wall. They are attacking the city now to cover the actions of the sergeants digging tunnels, so as to avoid us. They found that they never expected that the Lord had been prepared and everything was under control. This time they dug five tunnels and came from three directions. Now do we want to fight back and dig in? " Wang Shichong He sneered: "They don't want to dig into the city, but they want to dig under the city wall, then set up wooden pillars under the city wall, and then move away from these tunnels, leaving something to ignite the fire, and light the wooden pillars from the outside. As soon as the wooden pillars fall, the city wall will naturally collapse. This so-called trapping attack is an ancient siege technique. It's a pity that they met me this time. " Speaking of this, Wang Shichong's eyes were bright. Flash: "You don't have to worry about the battle at the top of the city. No matter how fierce and lively they fight, it's just to cooperate with the tunnel attack. According to our original plan, the Tang army who came along the tunnel will be buried underground forever. "Let's go!" In the tunnel of Nancheng, a group of gray-faced Tang soldiers wearing only single clothes were desperately digging the soil forward with shovels and shovels. Their heads were shaking slightly, and the line of the city wall two feet above their heads was shaking. After a hard battle, this tunnel, which is about two feet wide, is very solid. Wooden pillars have been set up in many places, so even though the dust is constantly falling, the entire tunnel is very solid and stable. Except for the heavy breathing of these men and the dull feeling caused by the stale air, everything was as before. The dim torch light swayed behind, and a man in his forties dug in front was the leader of the Tang Army's cave attack team, named Li Sanfu. His brows furrowed, and he turned around and shouted: "Calling." Put the lamp over the lamp, don¡¯t you hear me? What if someone gets burned?¡± The man in the back, who was in his thirties and had a sallow complexion, was Li Sanfu¡¯s younger brother, Li Wufu. He said with a smile, ¡°Brother, it¡¯s okay. We are almost at the foot of the city wall. We can pull out the wooden pillars and take a breather. Grandma, this tunnel has been dug for two miles. This has never happened before. " Li Sanfu checked. At the corner of his mouth, he sighed: "Isn't it because His Highness the King of Qin was afraid of surprising the defenders in the city? The brothers above fought so fiercely today, and so many people died, just to protect us. Wang Laoxie is cunning and usually digs secretly. Let him hear that only by storming the city at this time and digging tunnels quickly can we succeed. Okay, it's only a few feet away. Come on, dig under the city wall and set up pillars, and we can go back. "While he was talking, a surprised voice sounded from in front: "Uncle, uncle, let's get down to the city wall." Li Sanfu frowned and quickly climbed a few steps forward. A few pieces of land were vaguely exposed above his head. Blue bricks, he laughed loudly: "Okay, I know that this Luoyang city wall will not be stronger than other places. Okay, dig another two feet forward, and then support wooden pillars. This Dig it out for me, make it bigger, and make your voice softer, don¡¯t let the people in the city hear it!¡± He said, picked up the shovel himself, and began to loosen the soil in front of him, his movements were fast, but It was very light. The clods of soil in front fell like powder under his shovel, while the assistants behind him quickly picked up the soil crumbs in soil bags and passed them back. Throughout the tunnel, every few steps There was just one person lying down, hand in hand, handing out these bags of soil. Li Sanfu's eyes began to shine, and his breathing became rapid. Everyone in the tunnel stopped talking and held their breath. The only sound was the rapid stirring of Li Sanfu's shovel, "sand, sand, sand", and cooperated Listening to the sound of everyone's heartbeat, one beat at a time? sounded, and behind him, Li Wufu and several people picked up wooden pillars and pushed them into the tunnel behind him for reinforcement. Finally, a big clod of soil was dug out by Li Sanfu. He breathed a sigh of relief, clapped his hands, turned to Li Wufu behind him and said, "Okay, that's about it. The Luoyang City Wall is above our heads. Hurry up. Set up the wooden pillars, and then let's exit. Be careful, the fuse must be dry, so as not to burn out halfway." Suddenly, a dazzling ray of sunlight penetrated into this dark tunnel, and Li Sanfu's expression changed. Before he could speak, a few hooks opened several bloody holes in his body. The screams from his mouth echoed throughout the tunnel, like howling ghosts at night, and his whole body was like After these hooks and spears were pulled back and forth, they were dragged out of the tunnel. The light of a big knife could be vaguely seen, and everything fell silent. Li Wufu's eyes were about to fall out. He finally understood what had happened, and tears suddenly flowed out. He shouted: "Third brother, third brother!" Liu Heitai's black face appeared with the sunlight. At the entrance of the cave, there was a hint of cunning and ridicule in his flashing eyes: "Welcome to Luoyang City! I have been waiting for a long time." Li Wufu suddenly reacted and started to crawl back. Arch, while arching, he shouted: "Evacuate, everyone, retreat quickly!" Liu Heitai's eyes flashed with murderous intent, and he sneered: "You still want to leave after you are here? Just fill in the hole, and you won't have to dig it into the ground again. Give it to me superior!"