A formation was swaggering around the monsters. This formation was called the True Fire Formation. It was set up with seventy-two fire-gathering talismans. At that time, only Su Hang Samadhi True Fire was needed to transform the formation into a sea of ​​fire, and these monsters had nowhere to escape.

Because there was no monster coming forward to obstruct, the formation was quickly laid out, and Su Hang withdrew from the formation, waiting for the effect of the Forbidden Martial Order to disappear.

Soon, a burst of excitement in the space, an invisible ripples were recovered like a tide, and the light of the Forbidden Martial Arts hanging in the air converged and flew back to Su Hang's hand quickly.

When the time came, Su Hang felt that at that moment, his skills and magic power had returned to his body, and immediately put the Forbidden Martial Order in the Storage Ring.

That's now.

He sacrificed Samadhi True Fire with all his strength, and a fire ball burst out from his palm and threw it directly into the True Fire Formation. The formation seemed to be filled with gasoline. In an instant, the flames surged into the sky, submerging the monsters that were still inexplicably.

"Roar, roar, roar..."

A painful and angry roar came from the sea of ​​fire, and Su Hang hurriedly retreated to avoid being injured by the fire.

A tiger monster and a snake monster rushed out of the sea of ​​fire, and they were all in fire, roaring in pain, and rushed towards Su Hang. However, before they could rush out, they could no longer bear the burning of the flames and fell to the ground and churned.

Samadhi True Fire is not ordinary fire. It not only harms ghosts, but also has strong harm to ordinary creatures.

"Ahem..."

The monster was flooded by the sea of ​​fire, but the thick smoke choked Su Hang so hard that he hurriedly hid far away. He thought to himself that the flames required oxygen consumption. The underground palace was a closed space. How much oxygen could it be? Such a large fire would soon consume all oxygen?

The key is that the smoke is choking.

Fortunately, Su Hang has already had a state of innate realm and has changed to a fetal breathing state. He can not breathe for a long time. He just needs to wait until the fire is put out. After passing this ninth level, he will probably be able to go out.

After about twenty minutes, the roar in the sea of ​​fire gradually disappeared, and the flames in the true fire array quickly extinguished, leaving behind a burned scorched earth.

The monsters were burned to the point where only the remains were left, turning into starlight, and were recycled by runes on the top of the underground palace.

The underground palace was filled with a burning smell. The smoke and dust in the air could not be dissipated for a long time, and Su Hang dared not breathe. Make his body calm as much as possible and reduce oxygen consumption.

The ninth floor, is this considered passing?

Su Hang was full of expectations. There were nine floors in this underground palace, and now all nine floors have passed. If Zhang Daoling had any treasure hidden in this underground palace back then, then the treasure should be his own.

In Su Hang's expectation, a yellow light spilled from the top of the cave, and something fell in front of Su Hang.

Su Hang immediately bent over and picked it up.

It was a small box. It was the size of a children's schoolbag. It was square underneath, the lid was semicircular, and it was carved with many exquisite patterns. Anyone who saw it was a treasure chest.

There was a lock hanging on the box. Su Hang looked for it but had no key. He tore it hard and couldn't pull it open. The materials in this box were definitely not ordinary goods, and the things inside were probably not simple.

What is the reason for just giving a box but not a key?

Could it be that you have to find the key yourself?

What urinary sex?

This is already the ninth floor, where can I find the key? Could it be that I have to break through again?

It is obviously not enough to break again, and Su Hang has no intention of doing so. He has no ability. This battle just now was already very dangerous. It can be said that he was a coincidence. If he did it again, he would win. But it is not certain.

He took out the Zichen sword and cut it directly with one sword.

When opening a treasure chest, you don’t have to need a key. Sometimes, it’s better to be simpler and rougher. When the sword light passes by, there is only a clang and lightning is heard. The golden lock hanging on the treasure chest is cut off directly.

Su Hang's mouth slashed a little, so what if there is no key? I have opened it yet.

What would be in the box?

Su Hang was a little excited. Could this be the treasure hidden in the underground palace by Zhang Daoling?

The tip of the sword was inserted into the gap between the box cover and the box body, and with a gentle teasing, the box cover was immediately lifted.

As I imagined, it should be full of golden light and dazzling.

Su Hang was ready to cover his eyes, but the opening of the box cover surprised Su Hang.

In the box, there was only a four-legged, four-eared cauldron, about half a foot high, black ink, and the cauldron body was carved with oracle bone inscriptions. The four-eared cauldron carved is a stone statue of the blue dragon, white tiger, vermilion bird, black trunk, and a small cauldron cover above it was sealed.

"This should be a medicine cauldron, right?"

Su Hang lifted the cover of the tripod and only smelled a strong smell of medicine, as if it had been aged for a long time, making people feel refreshed. There is no doubt that this is a medicine cauldron, and it is a medicine cauldron that is often used.

Otherwise, the medicinal smell inside would not be so strong.

I pulled out the system and scanned it. Sure enough, the guess was right. The small tripod was called the Tianshi Ding, which reached the level of a middle-grade immortal treasure. It was the medicine tripod that the Tianshi Daozu Tianshi Zhang Daoling refined the alchemy. Legend has it that Zhang Daoling refined the Dragon and Tiger Golden Pill on Longhu Mountain. The alchemy tripod is probably the one in front of me.

Zhang Daoling actually kept the Tianshi Cauldron. It seems that if Zhang Daoling had either been about to explain his funeral at that time, he would have been so strong that he would not look down on this middle-grade immortal treasure at all.

Otherwise, who would be willing to lose all his advantageous treasures?

In Su Hang's view, I'm afraid the latter may be more likely. Zhang Daoling's strength is definitely not easy, and he may have surpassed the level of the Golden Pill at that time.

Another fairy treasure. Although he knew nothing about alchemy, no matter what, this thing was already the highest-grade treasure that Su Hang had ever seen. There were opportunities to learn alchemy in the future.

After putting away the Tianshi Cauldron, the destroyed box was also packed. The box was made of special materials, and maybe something could be refined in the future.

The air in the underground palace was so dirty that the smoke could not dissipate for a long time. Seeing that the teleportation array had been opened, Su Hang stood up without hesitation. No matter what, leave the underground palace first.

The water-blue halo wrapped Su Hang and disappeared from the ninth floor in an instant.

"Well? Where is this?"

When Su Hang opened his eyes, he saw not the mountains and rivers, nor the old face, but it turned out to be another cave.

However, this cave is much smaller than the ninth floor.

There was a high platform in the middle. At this time, Su Hang was standing on the platform, stepping on the teleportation array under his feet.

"Damn, won't you still fight?"

Su Hang instantly felt like he was so angry. Isn’t it a nine-story underground palace? Why is there a tenth floor?

According to the urinary nature of this underground palace, on the tenth floor, aren’t there a group of monsters from the Golden Pill Realm waiting?

It's too late to play, Su Hang just wants to withdraw quickly. Not to mention a group of golden elixirs, even one or two golden elixir monsters would be enough for him to choke.

However, Su Hang discovered at this time that there seemed to be no movement in this layer.

After waiting for a while, he did not see any monster coming out. Su Hang was stunned for a moment. Could it be that this level is not dangerous?

Only after passing the ninth floor can you be teleported to this place?

With a little nervousness, Su Hang walked off the platform. Sure enough, no monster came out again.

I looked around carefully. The space was very small, smaller than the first floor, and it didn't look like a monster.

The size of a basketball court is filled with tall bookshelfs around it, full of bamboo slips.

Su Hang walked towards a bookshelf. For more than two thousand years, the bamboo slips on the bookshelf looked a little old, but they were still strong, and there was no sign of being corroded by time.

Carefully take the next volume and expand it gently.

"Once the truth!"

All the above are beautiful ancient characters, which are the "Zhengyi Sutra" scriptures of the Taoist Tao of Heaven. The above describes the methods of practicing and Taoist Taoist Tao.

There are not many words that can be recorded in a bamboo slip. Su Hang looked at it roughly. There are more than ten layers on the top and bottom of the bookshelf, at least hundreds of volumes, which is a complete set of "Zhengyi Jing"

"I'm afraid this scripture is not as complete as the collection of books in Master Dao today, right?" Su Hang was happy to see Lie. There was such a place under the ninth floor of the underground palace.

Putting the bamboo slips back into the bookshelf, Su Hang walked to a bookshelf next to them and took off a roll of bamboo slips from the bookshelf.

"I want to pay attention!"

Another volume of Taoist scriptures. I want to comment on this. The legend is written by the Heavenly Master Zhang Daoling and annotated version of Lao Tzu's "Tao Te Ching". It is also circulated in the Xuanmen of China, but I don't know how far it is from the one on this bookshelves.

Since this underground palace was left by Zhang Daoling, this volume of scriptures must be the original, and its value is by no means comparable to the version circulating in the Xuanmen of China today.

I thought about my notes, and I also occupied the entire bookshelf, with hundreds of bamboo slips in total.

Looking further to the side, "The Yellow Emperor's Nine Cauldron Pill Classic"

"Wow?"

Su Hang's eyes lit up. Legend has it that Zhang Daoling first retired to Beimang Mountain to practice Taoism, and then obtained the Huangdi Nine Cauldron Pills, practiced in Fanyang Mountain, and became a elixir and became an immortal.

The Huangdi Nine Cauldron Pill Sutra, also known as the Huangdi Divine Pill Sutra, is said to be the magical elixir technique given to Xuanyuan Huangdi by the Nine Heavens Xuannv. Huangdi combined the magical elixir and ascended to immortality. This sutra is the legendary alchemy technique.

This sutra has a total of twenty volumes. Su Hang counted it and these twenty volumes of alchemy scriptures really occupy twenty bookshelfs.

"The Secret Book of the Three Emperors", "Taixuan Sutra", "Zhengyihuiwei Sutra", "Imperial Order of Gods and Immortals", "Nandou Sutra", "Bei Dou Sutra", "Taipingdong Ji Sutra"...

Su Hang's breathing became a little rapid, and this place was like a tunnel!

In addition to Taoist classics, there are also many classic books such as Confucianism, Mohism, and martial arts. This is a library, a library that has been preserved for more than two thousand years ago.

Any classic can probably benefit an ordinary person for life, and there are so many books hidden here.

Standing there, he was stunned for a long time, without a doubt, this was what Zhang Daoling really left behind.
Chapter completed!