This underground cave house includes necessary places such as the medicine garden, the spirit beast garden, the cultivation room, and the alchemy room, among which the cultivation room, as a common meeting place, can lead to any place.

Due to the fact that it was more than 100 zhang deep underground, the cave was pitch black, so Han Li inlaid a lot of moonstones on the inner wall of the cave, illuminating the cave as bright as day.

Then, with the help of the thousands of fierce sword lights conjured up by the Green Bamboo Bee Cloud Sword, Han Li pierced the top of the cave mansion with a thousand holes. In order to allow the light from the outside world to shine into the medicine garden, Han Li also deliberately arranged a small transformation circle on the ground directly above the medicine garden, so that all the light shining nearby was refracted into the underground medicine garden.

In order to hide people's eyes, Han Li deliberately reopened a larger cave mansion near the mountain peak, and the previous underground cave mansion had a secret passage leading directly to the mountaintop cave mansion. This fake cave mansion as a guise is also well arranged inside, but most of the medicine gardens are planted with ordinary immortal medicines.

Subsequently, Han Li took great pains to set up several prohibitions around this fake cave mansion, causing people who visited him later to think that the mountaintop cave mansion was where his cultivation place was.

In order to prevent the beasts in the mountains from touching the prohibition, Han Li drove away the low-level demon beasts and beasts within a radius of more than a thousand miles in this place when he arranged the formation.

After nightfall, the bright moonlight was shining through the many holes, sprinkling on the many precious elixirs planted in the medicine garden. At this moment, Han Li was in the medicine garden of the underground cave mansion, and he was playing with a verdant vial in his hand, which was the palm of the heaven bottle after subduing the bottle spirit.

Han Li's fingers rubbed the dark green pattern on it, and his heart was filled with emotion. The reason why he has been able to walk without danger on the road of cultivating immortals, until he has now ascended to the immortal realm, it can be said that most of the credit is due to this palm heavenly bottle.

On that day, after learning for the first time about the Heaven Stealing Bottle in Ma Liang's hands, Han Li was even more full of expectations for this Palm Heaven Bottle. It was no wonder that even the Immortal Realm Dao Ancestors had taken a fancy to the supreme treasure, and Han Li certainly couldn't wait to get a glimpse of the mystery as soon as possible.

Under the moonlight, the emerald green palm bottle gradually became brighter, a pale yellow light overflowed from the bottle, lining the palm bottle slightly transparent, the naked eye can see that there is a pigeon's egg-sized yellow light cluster is lying quietly in the bottle, exuding a faint luster.

Even though Han Li had already subdued the Palm Heaven Bottle Spirit from the Bitter Spirit Island in the Demon Realm before, he still used the sealing method used by the True Immortal who was trapped by the Spirit King and temporarily sealed the Bottle Spirit inside the Palm Heaven Bottle.

In the eight thousand years that Han Li had been in retreat, he had tried many methods, but he couldn't completely subdue this bottle of spirit. The more this was the case, the more Han Li felt that this treasure was extraordinary, so he continued to try all kinds of mystical secret techniques one by one.

Collecting the Bottle Spirit was still fruitless, and before Han Lidu's Ascension Tribulation approached, he had no choice but to follow a conservative sealing method recorded on a piece of animal skin that had been turned out of Ma Liang's storage bag to completely seal the Heavenly Palm Bottle. However, during the time when the Palm Heaven Bottle was completely sealed, even the function of promoting the birth of green liquor could not be achieved. This was also something that Han Li discovered by accident after trying it several times, which made him feel a little regretful.

Even so, Han Li didn't dare to unlock the seal of this Heavenly Bottle without permission. In the case that the bottle spirit is not sealed, it takes a lot of strength to suppress the bottle spirit alone, and if you encounter a strong enemy one day, you may be burdened by it. At that time, if the bottle spirit escapes again, it will be difficult to find it again.

Moreover, before he had completely subdued the Heavenly Bottle, Han Li would not easily break the seal. Since the trapped True Immortal was able to track the bottle spirit at the beginning, then the Nine Yuan Dao Ancestor of the Nine Yuan Temple could do the same, and the subtlety of the mark would only be surpassed. If he unsealed it recklessly, he couldn't guarantee that Jiuyuan Guan had any clever secret techniques that could easily track it down, it would be really a big trouble. Therefore, Han Li had no choice but to shake his head, sigh lightly, and reluctantly put away the Palm Heaven Bottle, fearing that he would let this treasure sleep for a while longer.

However, the skin finally recorded a concise method of sacrificial alchemy, called the small sacrificial alchemy. According to this method, although it is not possible to completely subdue the Palm Heaven Bottle, as long as it is performed once every thousand years, it can be activated normally on weekdays. After the refinement of this technique, the Palm Heaven Bottle can only perform some of the most basic magical powers. Han Li had tried this method of cultivation before, and had also used it when he encountered the Celestial Venerable at the Dragon Island Dao Fruit Conference, and although his cultivation realm at that time could only barely stimulate a trace of the vial's supernatural power, it was still overwhelming the same level, which showed the terror of this Heavenly Bottle. However, at that time, urging the Palm Heaven Bottle not only consumed a lot of Divine Mind Mana, but even a short period of mana would be disconnected after the cast, so Han Li did not dare to take the risk and continue to do so. In fact, this small sacrificial alchemy technique originally required a cultivator to reach at least the late stage of the True Immortal Realm, and if Han Li didn't stop using it in time, he would end up with an explosion and fall.

The skin on which the technique was recorded appears to have been deliberately torn from the marks on its edges. After this small sacrifice alchemy, it is very likely that there is also a large sacrifice alchemy, perhaps this great sacrifice alchemy can completely subdue the Palm Heaven Bottle Spirit. According to Han Li's guess, this beast skin was most likely given by the Nine Yuan Guan Dao Ancestor when he gave it to Ma Liang when he robbed the Heavenly Bottle. If Ma Liang can successfully retrieve the Palm Heaven Bottle in the Nether Realm, he can use this technique to seal the bottle spirit and bring it back to the Nine Yuan Temple safely.

There was no other way to do it now, and Han Li could only raise his cultivation realm to the middle stage of the True Immortal Realm as soon as possible, and then try to study the method of sacrifice and refinement, and then initially master the Palm Heaven Bottle. As for whether or not that piece of animal skin originally recorded a more thorough sacrificial refining technique, it is not something that can be considered now, I am afraid that I will have to go to the Nine Yuan Temple in the future to know the truth.

Although for quite some time, there was no way to rely on the Palm Heaven Bottle to spawn green liquid to cultivate elixir, but fortunately, Han Li had found a considerable amount of elixir from the storage bag left behind by Ma Liang. Among them, there are countless low-level immortal realm medicinal materials, and they are best used to practice alchemy. Thinking of this, Han Li felt a little relieved in his heart, and his thoughts were not entangled in the Heavenly Bottle.

Now, Han Li did not have the ability to possess and protect this Heavenly Bottle. As everyone knows, Pifu is not guilty, but he is guilty, if the Heavenly Bottle is targeted by those who plot against him or even one of the forces, Han Li's situation will be precarious.

PS: "The Legend of the Immortal World of Mortal Cultivation" serialized WeChat public account has been opened, WeChat ID: Lian_zai_, welcome all Taoist friends to search for WeChat account attention, ask questions, chat, complain, irrigation, all welcome.