Han Feng felt more and more about the wonderful use of the Heavenly Heart Tree, because there was a cluster of origin runes in the Feather Secret Realm that was connected to it, and he could observe the world through it.

Sure enough, it's a treasure tree!

Han Feng was overjoyed, feeling that he had not come for nothing.

He continued to comprehend this secret world, knowing that the opportunity was rare, as long as he fully understood the composition of this world, he would almost become a figure in the Tianyi realm.

Of course, it is only a Tianyi Realm character in this secret world, and when he goes to the outside world, he has to further comprehend the origin composition of the human world.

But as long as there is a beginning, it is only a matter of time after returning to the human realm, and sooner or later you will be able to completely understand the origin runes of the human realm.

Han Feng selflessly comprehended the mysteries of this secret world, and through the origin runes, he could see farther and farther, and the mountains and rivers of the entire world could be seen clearly.

One by one, the monks who came in to practice this time reflected in his soul, and he had the feeling of looking at them outside the mirror, as if they had become the people in the picture.

Of course, he couldn't interfere with their activities, but to get there, he just had to teleport through the origin runes of this world, and he could reach them in an instant.

He only now understood why the powerful people of the Tianyi Realm were able to go to any place in the human realm in an instant, it was because they had already understood the origin runes of the human realm, and with the help of the power of the origin of heaven and earth, they shuttled through the void, which was naturally like a leisurely step.

Time seemed to have lost its meaning, and Han Feng devoted himself to this wonderful feeling, and the breath of the whole person became like nothing, as if he was completely integrated into this world.

When more than ten days passed, he suddenly felt that the consumption of the three forces in his body accelerated, and when he opened his eyes, it turned out that there was not much golden light left in the space inside the Tianxin Tree, and almost all of them were absorbed by him, even if the Tianxin Tree could transform the external aura into special energy, it could not make ends meet, and it could not make up for his huge consumption.

Han Feng hurriedly took out the Immortal Spirit Stone, held it in his hand, silently absorbed the spiritual power, transformed it into three powers, replenished his consumption, and comprehended the mysteries of this secret world as always.

He had only now comprehended two-thirds of the Origin Runes, and it was getting more and more difficult, and without sufficient strength support, he couldn't comprehend all of them thoroughly.

Only then did he understand that it was no wonder that it was described in various classics that he must prepare enough immortal spirit stones to be promoted to the Tianyi Realm, otherwise he would give up halfway, and it would be more difficult to make progress at that time, so he must do it in one go.

In less than a day, the immortal spirit stone in his hand turned into a smear of ashes, dissipating like quicksand.

He silently calculated, and found that the immortal spirit stones he had in reserve were not very sufficient, maybe about three pieces were missing, and this was still counting the loot he had obtained before.

He thought for a moment, and then he was about to lock his eyes on the dried corpses outside, who still wore storage rings on their fingers, all shiny and eye-catching.

It's a pity that he can't leave this space yet, he can only see things outside, but he can't take them in the air.

The Fu Demon Demon can't leave the remnant Fu for the time being, as for Duan Tian and the fifth sister, they can't get out of this space either, and forcibly leaving it will interfere with his comprehension.

He pondered and meditated, and could only pin his hopes on his own enlightenment, maybe after a while, he would be able to influence the outside world and directly take away the storage rings of those dried corpses.

Time passed little by little, and before I knew it, more than half a month had passed.

During this period, many passers-by came, and a few died, but there was a monk who was very powerful, and he actually picked up a real Tianxin Fruit, and was violently attacked by the Tianxin Tree, but he still resisted it, and fought with each other, and the sky and the earth were shattered, and the sun and moon were gone.

Han Feng looked at him and found that the strength in this person's body was strong, and he was also able to combine three forces, and with the help of a special spiritual treasure, he turned into a streamer and disappeared into the sky.

Han Feng didn't spend time paying attention to him and continued to specialize.

He had already comprehended nearly ninety percent of the origin runes of the secret realm, and the remaining part was becoming more and more difficult, and the consumption was getting bigger and bigger, but there were only two immortal spirit stones left in his hand, which could last for a day at most.

Han Feng naturally didn't feel helpless, and began to try to manipulate the Heaven and Earth Origin Rune outside, trying to strip the storage ring of one of the dried corpses.

But it was extremely difficult, he hadn't been able to control it yet, it only caused a slight ripple in space, and it was so faint that he couldn't shake the storage ring of the dried corpse.

Han Feng was not discouraged, but there was a change, as long as he went further, he might be able to drive the Heaven and Earth Origin Rune to serve him.

Time flies, as if in the blink of an eye, another day and a night have passed.

Han Feng devoted himself to the state of comprehending the power of the origin of the secret realm, as if he didn't know that the immortal spirit stone in his hand was about to run out.

His body didn't change, but it felt like he was about to slowly leave this space and merge with the outside world.

Han Feng's mind moved, and the three forces were one, and the heaven and earth outside were filled with strange fluctuations, and an invisible force descended and surrounded the dried corpse.

With a "click", he finally removed the storage ring of the dried corpse, and used the power of the origin rune to form a special magic circle, teleporting it to the inner space of the Tianxin Tree.

He hurriedly grabbed it, quickly refined it, and opened it to take a look, but he was disappointed, there was not a single immortal spirit stone, which made him speechless.

But there is no way to do this kind of thing, not everyone has immortal spirit stones, even if these people are not simple candidates for disciples, but there is no guarantee that everyone has immortal spirit stones.

Han Feng didn't have time to complain, and immediately manipulated the Origin Rune outside to collect the storage rings of other dried corpses.

However, there were no immortal spirit stones in the three storage rings in a row, which made him anxious.

At this moment, the immortal spirit stone in his hand only has one-third of the spiritual power left, and it is estimated that he can't even hold it for half a day, once there is no immortal spirit stone, he can only rely on his own strength to consume, it will be very difficult, and there is also a great risk.

If he is not careful, he may become a human himself, and he will not even be able to retain his flesh and blood.

He didn't think much about it, and immediately mobilized the origin runes outside, and did his best to detach the storage rings of the three dried corpses and teleport them to him.

He emitted soul power, instantly refining them, and swept them in, but there was no immortal spirit stone, which made his face change slightly.

He forcibly held down his irritable heart, took a deep breath, concocted the same method, and took away the storage rings of the three dried corpses again, and after refining, he still didn't find the immortal spirit stone.