Super Invincible Immortal Doctor-Chapter 372 Dragon-Subduing Formation_1

This underwater cave has a diameter of nearly two meters. However, hidden by lush waterweeds and located at the deepest part of the water, it’s tough to discover.

Su Chengyu reached the entrance of the cave and pushed away the waterweeds. A water-repelling barrier was set at the entrance, which felt like a sphere of water to the touch.

The water-repelling barrier could block the water flow and also Divine Sense. Su Chengyu muttered a chant under his breath. Ripples appeared on the surface of the barrier. Once he found the right moment, he passed through the barrier and entered the cave.

However, as soon as he entered the cave, Su Chengyu immediately felt a chill attack him. At his current level, he was immune to both cold and heat. Even standing in a freezing snowy field, he wouldn’t feel cold.

A gust of cold wind blew in from the hollow of the cave, chilling him to the bone.

"Could this be the legendary Earth Yin evil energy?"

Su Chengyu operated his mana to dispel the chill. He reached out and touched the stone wall, which was cold and hard like chilled iron. He readied his Dragon Slayer Sword but didn’t venture further into the cave. Instead, he used his Divine Sense to explore.

No one knew what dangers lie in this cave. It was indeed safest to use Divine Sense for exploring. If anything seemed amiss, he could retreat in time.

The cave was deep, sloping downward continuously. Su Chengyu’s Divine Sense could explore up to about a thousand meters, but it could not reach the bottom of the cave. Furthermore, the cave became more spacious the deeper he went. The entrance was only over two meters in diameter, but a thousand meters deep in, the diameter had exceeded ten meters.

Su Chengyu hesitated briefly before deciding to venture further. He held the Dragon Slayer Sword in one hand and a talisman in the other, staying on full alert. freēnovelkiss.com

After Su Chengyu had ventured more than a thousand meters inside the cave, his Divine Sense finally detected a stone door.

The diameter here was about twenty meters. The stone door was also over twenty meters high and very thick, obscuring Su Chengyu’s Divine Sense yet again.

"Strange! There’s surprisingly a ’Cave Heaven’ deep within Shizhaigou. There are rune formations engraved on the door of the stone. Could this cave be a ’The Blessed Place in the Cave’ established by a cultivator?"

Cultivators in the past liked to choose places abundant in ’nature’s spiritual energy’ as good geomantic lands for establishing their caves for cultivation.

However, with the decline of cultivation, many of the cultivation caves were either discovered and claimed by others or hidden in deep mountains and large swamps where no one knew.

Being able to establish a cultivation cave two thousand meters beneath the Shizhaigou implied that the owner was unfathomably powerful. Generally, cultivators would leave lots of treasures in their caves. Obtaining a legacy cave was a great fortune.

After hesitating briefly, Su Chengyu decided to explore further. Perhaps this was a chance for a great turning point.

He quickened his pace and arrived before the giant stone door. Perhaps due to the long years, the formation on the stone door was mostly damaged. With Su Chengyu’s current strength, he could break open the formation on the stone door and open it.

However, Su Chengyu had some hesitation. Recalling the plea for help he had heard in the afternoon, he couldn’t help but suspect if there was a monster sealed behind the stone door. If the seal was broken and the monster was released, it could be a disaster.

Standing outside the stone door, Su Chengyu was in a fierce mental struggle. His intense curiosity made him eager to find out what was behind the stone door.

In the end, Su Chengyu gritted his teeth and decided to probe to find out the truth. After all, he was going to attempt the Foundation Establishment realm after returning to Lin Jiang, facing the heavenly tribulation, a life or death situation.

If there was indeed a cultivator’s legacy inside, and he obtained some treasures, it could increase his chances of surviving the tribulation.

The formation on the stone door should have been very powerful, but after hundreds and thousands of years, it was damaged and had lost more than eighty or ninety percent of its power. Su Chengyu broke the formation with ease and then exerted force with both hands, slowly pushing open the hefty stone door.

Upon opening the stone door, an even colder burst of air hit him and immediately caused frost to appear on Su Chengyu’s hair. Meanwhile, the space behind the stone door was vastly open.

Su Chengyu had night vision and could see everything in the cave without any light. The space behind the stone door was vast, a gigantic cave. This was not any Immortal Family cave dwelling at all. What made Su Chengyu’s eyes bulge was a stone pillar in the middle of the cave with a dragon tied to it by chains.

This dragon was of a Cang Qing (greenish-blue) color. Its body, at least a hundred meters long, was bound by chains.

The moment Su Chengyu opened the stone door, the God Dragon opened its eyes. Its body twisted, and the chains made a clattering noise.

Watching this happen, Su Chengyu was struck dumb. This was a legendary God Dragon. The appearance of this dragon was similar to the one Su Chengyu had seen inside the Dragon Slayer Sword, only it seemed a bit more dignified.

Su Chengyu did not turn around and run away. Not because he was fearless of this enormous God Dragon, but rather he saw a crop of grass at the base of the stone pillar. This grass was forest-white in color and peculiarly shaped. It matched the description of the Bone Washing Grass Su Chengyu had seen in ancient books.

Bone Washing Grass grows in extremely Yin and cold places. This cave was filled with Earth Yin evil energy and indeed nurtures Bone Washing Grass. Moreover, this grass was highly toxic. Even if a cultivator unintentionally lets the poison enter their body, it would cause significant trouble.

"Bone Washing Grass! It’s really Bone Washing Grass!"

The Bone Washing Grass is one of the two most essential ingredients to concoct the Nirvana Pill. Su Chengyu had placed a bounty on the Nine Heavens Dark Web, but had not managed to acquire any clues. However, unexpectedly, he found it here.

"Finally, someone has arrived. I can finally see the sky again! Young man, please come and save me."

This God Dragon started speaking human language, and the voice was exactly like the plea for help Su Chengyu heard during the day. Su Chengyu finally understood that it was this God Dragon calling out for help.

What kind of person could trap this God Dragon here? Incredible!

"There are rune formations on this chain, how am I supposed to save you?" Su Chengyu gulped and asked.

The God Dragon stretched out its massive dragon head and opened its mouth, "This Dragon-Subduing Chain needs to be combined with the Dragon-Subduing Formation to exhibit its power. The sword in your hand is a Magic Artifact. You only need to destroy that Dragon-Subduing Formation over there. By wielding your sword, you can naturally break the chain."

"Even so, why should I save you? Once I save you and you regain your freedom, I suspect the first thing you will do is devour me. I only heard your call for help and accidentally intruded here. Sorry for the inconvenience. Goodbye."

Su Chengyu said this aloud, but in his mind, he was also debating how he could harvest the Bone Washing Grass.

Save this God Dragon? Impossible! Once he saved it, he would probably end up in its stomach immediately.

Saving Little White last time had already left a psychological shadow on Su Chengyu.

"I am the noble Divine Azure Dragon, and my dragon clan always keeps its promises. If you save me, I will not harm you after I am freed, and I will express my gratitude, giving you a massive reward, with a Superior Grade Spiritual Artifact as a token of appreciation. How’s that? I would even give you a drop of God-Dragon’s Blood Essence, allowing you to possess the power of a God Dragon."

The Azure Dragon pledged solemnly.

"I’m not interested, and I don’t trust any promise. As for your God-Dragon’s Blood Essence, I don’t want it. I don’t fancy becoming your Monster Slave." Su Chengyu snorted. Seeing that the dragon couldn’t escape, he was not afraid of it.