The old man was more and more shocked, unable to describe his feelings at this moment.

  After hundreds of moves, Liu Wuxie was like a gentle breeze, and every change in his move left him unable to guess.

  It's like a hard bone in front of him, and he can't swallow it down, that feeling is very suffocating.

  The coordination of Ghost Eye Technique, the old man's changing moves, appeared clearly in front of Liu Wuxie, becoming clearer and clearer.

  "Kid, how long can you hide?"

  The old man was enraged, his murderous intent spreading far and wide. With a single palm strike, the pillar behind him snapped in two at the waist, causing a large section of the main hall to collapse.

  A fierce palm wind stuck to Liu Wuxie's body, tearing open his clothes and almost killing him with one palm.

  Liu Wuxie let out a cold sweat, still underestimating the strength of the Imperial College elder, absolutely not comparable to Yunlan's kind.

  "You'll take one of mine too!"

  The short sword was raised, pointing to the vast sky, the knife energy that covered the sky and the earth formed a knife momentum, with the help of the environment here, the suffocating knife intent made the old man's face change color.

  "Your tiny innate realm has actually grasped the intent of the sword!"

  The old man's eyes were filled with incredulity, his pipe thrust deep into Liu Wuxie's heart, with extreme ruthlessness.

  Such a genius must not be allowed to grow up, offending him today may become his own nightmare in the future.

  The knife intent locked onto the old man's body, and his speed of movement slowed down greatly. Under the gaze of the Ghostly Gaze Technique, everything seemed to have nowhere to hide.

  With a flash of footsteps, he dodged the old man's pipe and appeared on the old man's right side. The blade released a majestic aura, like a rolling hot wave, sweeping across the entire great hall.

  "Not good!"

  The old man whispered, Liu Wuxie's knife momentum had him locked in place, with no room for retreat. He was actually being forced to this point by a mere Innate Five-Realm cultivator.

  With a backhand slap, he forced his way towards Liu Wuyi's lower abdomen, intending to die together.

  Liu Wuxie's short knife continued to slash down, unable to avoid his fierce palm wind, forcing Liu Wuxie to withdraw his move.

  Just as both sides were about to collide, all the knife intent vanished into thin air.

  Liu Wuxie disappeared, like a ghostly shadow, vanishing before the old man's eyes. Just now, one knife had forced the old man to his right side, conveniently vacating a position. Seizing this opportunity, he flashed into the Yangyang Cave.

  Everything happened in a flash, and before the old man could react, Liu Wuxie had already entered the Flame Sun Cave.

  "Damn it, damn it! This kid actually deceived me."

  Who would have thought that Liu Wuxie's attack on the old man was fake, and his real purpose was to shock him back.

  Killing the old man would bring no benefit to Liu Wuxie, and it would play right into the hands of the treacherous Xue family.

  Wait for him to return after his cultivation, then find them back one by one.

  Along the passage, without a moment's stay, from underground seeped out rolling hot waves, inside contained extremely strong flame spirits.

  After about the time it takes to drink a cup of tea, the speed began to slow down, and the old man guarding the main hall would not be able to catch up.

  Only then did he carefully examine his surroundings, and a series of natural stalactites hung down in front of Liu Wuxie.

  This is a natural underground karst cave, crisscrossing in all directions, developed by the Imperial College, with an area far larger than what Liu Wuxie imagined.

  A main road leads directly to the depths of the underground, with many branches on both sides, it is unknown where they lead.

  Logically speaking, Liu Wuxie should have no problem walking along the main road. The Imperial Academy has been developed for hundreds of years, and all underground caves have been thoroughly inspected. It's easy to get lost if you walk randomly.

  Wall lamps hung on both sides, barely illuminating the road, still a long way from the depths of the underground, scorching heat waves made Liu Wuxie sweat profusely.

  "What a pure and refreshing yang energy!"

  Liu Wuxie said quietly, "Shi Zhan's Tai Huang Tian Qu is being used, the scorching Yang energy is being absorbed, and the Tai Huang Dan Tian is expanding."

  The boundary is surging with desire to move, but can only be forcibly suppressed, waiting for a safe place to break through.

  All of a sudden!

  Liu Wuxie stopped in his tracks and didn't continue further down. He looked to the right, where a dimly lit passageway appeared.

  "What's going on? The mysterious sprout in my dantian is leading me this way?"

  The divine consciousness sank into the vast expanse of the Dan Tian, a mysterious ancient tree that was several times taller than a person emitted a rustling sound, its leaves suddenly pointing towards the black passageway on the right side, reminding Liu Wuxie to head in this direction.

  The dark corridor was blocked by iron chains in front, with an iron general hanging on it. Ordinary people can't get through at all.

  "Danger, no one is allowed to enter, violators will be killed without pardon!"

  It's easy to imagine that there must be great danger lurking inside.

  Liu Wuxie hesitated and continued walking down the passage, safety was definitely not a problem, finding a quiet place to cultivate for ten days would allow him to break through his current realm.

  The mysterious sapling reminds him, making him hesitant and unsure, is there some kind of secret hidden inside?

  Crawling up along the rocks, standing in front of a dimly lit passageway, only one person high, barely enough for one person to squeeze through, the biting cold air blows up along the passageway, colliding with the scorching hot air waves, quickly disappearing without a trace.

  "How strange! This is the Blazing Sun Cave, so why is there an extremely cold and gloomy atmosphere?"

  Liu Wuxie's face was filled with confusion, he reached out and grabbed the chain, it turned out to be made of Wan Nian Han Tie, a type of metal that even spiritual artifacts couldn't damage.

  When the left side transmits the scorching Yang Qi, the dark passageway transmits the Yin Qi to the right. One Yin and one Yang, blending together.

  "Rumors that reach the land of utmost yang will also be accompanied by things of utmost yin, and rumors that reach the land of utmost yin will also be accompanied by things of utmost yang!" Liu Wuxie said quietly.

  It's not hard to understand that where many poisonous snakes live, there must be an antidote, same principle.

  Heaven and earth, all things, are mutually generating and overcoming each other.

  Yang overcomes Yin!

  Yin overcomes yang!

  They generate and restrain each other, growing together with a very high probability.

  The passage was blocked by a chain, and Liu Wuxie couldn't get in at all. He reached out to grab it, and the chain made a rattling sound.

  The chains were dropped and all around was restored to calmness.

  Suddenly!

  From the dark passage came a strange sound, like someone was crying and wailing, echoing with a mournful "Wooo..."

  Liu Wuxie became even more curious!

  With his current ability, he definitely can't cut off the chain. The only way is to open the iron lock and walk in.

  A foot-long iron lock, forged by a powerful refiner, with numerous spiritual patterns engraved inside. If the deciphering fails, the iron lock will be completely scrapped and can never be opened again.

  A small iron lock, its value was even higher than that of a spiritual artifact, which ignited Liu Wuxie's strong curiosity.

  On the iron lock are carved many precious spiritual patterns, which also contain the way of array method. If an ordinary person comes to see it, they can't even understand it, let alone open it.

  These intricate patterns, in front of Liu Wuxie, were like a few clumsy brushstrokes, carved on the iron lock, without any technical content.

  He pulled out a carving knife, and one by one, new spirit patterns emerged on it. A thin layer of mercury flowed on the surface of the iron lock, constantly shuttling back and forth.

  "Crack!"

  The first lock core popped up and was easily cracked by Liu Wuxie.

  One after another, ten lock cores in total, tightly binding the iron chain together.

  After opening the iron lock, he removed the chain and slipped into the dark passage. He continued to put the iron lock back on, restoring everything to its original state.

  As if nothing had happened, along the dimly lit corridor, crouching down, step by step deeper inside.

  No flames, no light, had to use Ghost Eye Technique, barely able to see a rough outline, the surroundings were pitch black.

  ……

  At the entrance of the grand hall, two people suddenly appeared, Xue Pinzhi and another young man, who had just arrived.

  "Old man, where is he?"

  Xue Pinzhi asked about the way, the scars of a big war were still there, and an intense battle must have just occurred.

  "Let's go in!"

  The old man's face was filled with despair, the dignified Washing Marrow Realm elder, unexpectedly couldn't stop a single Pre-Heavenly Boundary cultivator, it's embarrassing to even mention it.

  "Did you go in?"

  Xue Pinzhi exchanged a glance with another young man, and a hint of displeasure flashed in his eyes. The Xue family had not hesitated to shed blood on Gu Zhanglao's body after all.

  "Old man, can't you even handle such a small matter!"

  Xue Pinzhi said bluntly, "You're just a minor Washing Spirit Realm cultivator, yet you dare to speak to an elder of the Washing Marrow Realm in such a manner. If there were outsiders present, they would be shocked."

  They had already made arrangements, yesterday's plan failed, launched a second plan, intercepting Liu Wuxie here, and it would be best to abolish him.

  He actually allowed him to enter the Flame Sun Cave for cultivation. The young man beside Xue Pin's body flashed a cold and terrifying aura, which swept across the entire hall, causing Gu Zhang Lao to take a step back.

  The old man looked at the young man, a hint of fear on his face. The other was only in the high-level Washing Spirit Realm, yet he made him so afraid.

  "I didn't expect this kid to be so cunning, taking advantage of my unpreparedness and suddenly drilling into the Flame Sun Cave, relying on a strange footwork to barely make it in."

  The old man had a bitter melon face and didn't make excuses for himself, which was also true.

  "Rubbish!"

  The young man beside Xue Pin let out a cold snort and lazily walked towards the Flame Sun Cave, not bothering to argue with Gu Zhang Lao.

  No one is allowed to enter the Flame Cave without the arrangement of the college, this is the rule. He actually broke into the Flame Cave openly, what a big nerve!

  "Xue Rui Gongzi, don't make things difficult for me. Everyone who enters the Flame Sun Cave to cultivate must have a special token issued by the Academy."

  The old man stopped them, and the token that Liu Wu Xie took out was indeed issued by the college, but had already been taken away by the old man.

  Every trainee who enters must register and submit it for review every five days.

  "How dare you stop me!"

  Xue Rui's gaze was like a poisonous thorn, falling on the body of Gu Zhanglao, who shuddered and gave way to a path.

  "Xue Rui Gongzi, you can go in, but he cannot. You must come out within half an hour at most."

  The old man let out a sigh of relief and allowed Xue Rui to enter, but Xue Pinzhi was not permitted and had to stay outside.

  "Half an hour is enough to kill him!"

  Xue Rui finished speaking and strode towards the Yangyan Cave, leaving Xue Pinzhi behind to wait for him.

  Speed suddenly accelerated, lightning flashed and flowed, in less than ten breaths of time, appeared where Liu Wuxie had just stayed.

  He is extremely familiar with this place, and it doesn't seem like Liu Wuxie's first time here, no need to stop and go.

  Passing through the dark passage without stopping, it directly plunged into the depths of the underground.

  After a stick of incense, the front view suddenly opened up, and a cultivation area appeared. This is actually the true training ground of Yan Yang Cave.

  There were still a few people cultivating when Xue Rui suddenly arrived, interrupting them. Their eyes all turned to look at Xue Rui.

  "Xue Rui, how did you come?"

  A young man suddenly spoke up and recognized Xue Rui.

  "Where did that young kid who just came in go?"

  Xue Rui nodded and asked them a few people, but did not see Liu Wuxie.

  From Aiwan.