The moment he stepped into the Heavenly Palace complex, Fang Xingchen felt an illusion of stargazing, as if he had come to another world.

He heard a burst of melodious sounds resounding in the Heavenly Palace complex, and reverberated back and forth throughout the space.

He saw the mist on the ground rolling and tumbling, evenly distributed around the white jade building, drifting slowly with the air current.

He felt that the pure life energy was densely distributed in these Heavenly Palace complexes, and it filled every inch of space here, and even between breaths, he could take a breath of pure life energy into his body.

"I feel like I'm absorbing energy faster, probably because of the influence here. As soon as Ruan Lingyu stepped into the range of the Heavenly Palace, he felt the energy in the space surging in, instantly filling the life energy reserves in his body.

"This place is very strange, there is no other energy in the surrounding space, only pure life energy is filled in the space. And I have only seen this situation once in the ruins of Kunlun Mountain. The fact that only life energy existed in the space made Fang Xingchen think of the reason for the existence of those mist energies in the ruins of Kunlun Mountain, and that mist energy was also transformed by the pure life energy in her body after the fall of Wa Shen Niangniang. And now the life energy in this Heavenly Palace made Fang Xingchen think of a possibility.

"Are you saying that the mist energy in Kunlun Mountain that you absorbed and the life energy that turned into mist in this is possible to be the same situation?" Everything that happened in Kunlun Mountain, Fang Xingchen said it to Ruan Lingyu word for word, he now has absolute trust in Ruan Lingyu, and he sincerely treats Ruan Lingyu as a relative.

When Fang Xingchen said that the life energy that had turned into mist in the ruins of Kunlun Mountain was connected with the life energy that had turned into mist in the Heavenly Palace in front of him, Ruan Yuyu was also shocked.

"That's right, so the life energy that turns into mist in the surrounding space must be transformed by the energy of these fallen corpses before they were born. It's just that there are so many corpses, why is it that only the life energy remains here, and why does the other energy disappear?" In fact, Fang Xingchen also had some knowledge of this problem.

At the beginning of the ruins of Kunlun Mountain, Fang Xingchen learned from the residual memories of Wa Shen Niangniang and the mouth of the enlightened beast in the illusion that Wa Shen Niangniang was a god who had mastered life energy, and the energy left behind after her death was naturally life energy.

And in the Heavenly Palace in front of them, there are four corpses in front of them alone, these four corpses will definitely not grasp the same kind of energy, the energy they turned into after the fall, it must not only be life energy, there should be other energy existing here.

However, on the contrary, there is only pure and rich life energy here, which is all over the Heavenly Palace.

"Perhaps, there is only a way to preserve life energy in the Heavenly Palace, after all, the Heavenly Palace is a place where the gods live in myths and legends, and the life span of the immortals is extremely long, and they will definitely consume a lot of life energy, so the Heavenly Palace in front of them may have a method of condensing life energy and preserving life energy. "Ever since cultivating the Source Spirit Heart Sutra, Ruan Lingyu has known the mystery of immortality hidden in the Source Spirit Heart Sutra.

"Sister Lingyu's analysis is very reasonable. It seems that Sister Lingyu has already understood the true meaning of the Source Spirit Heart Sutra. From Ruan Lingyu's well-founded analysis, Fang Xingchen probably knew the reason why there was only life energy in the Heavenly Palace.

As for why Ruan Lingyu was able to analyze the reason why only life energy existed in the Heavenly Palace, it was necessary to talk about the mystery of immortality hidden in the Source Spirit Heart Sutra.

In fact, after Wukong Kong finished interpreting the Source Spirit Heart Sutra, Fang Xingchen only read it once in his hand, and he had already understood the mysterious meaning contained in it, which was the way of immortality.

The path of immortality contained in the Heart Sutra is about the relationship between life energy and the immortality of all living beings.

It is said that no living creature in this world can live forever, and even the heavens, earth and the universe have a time of death.

And the so-called immortality is also the same age as the heavens and the earth, and when the heavens and the earth are destroyed, the creatures within it will also be destroyed.

If a living being wants to be the same age as the universe of heaven and earth and achieve the so-called immortality, it needs to focus on cultivating the mysteries of life energy contained in the universe of heaven and earth.

However, it is extremely difficult to achieve the path of immortality without being depleted of life energy.

As the creatures continue to evolve, the energy consumed by the body will continue to increase, and once the life energy consumption in the body is greater than the absorption, it will drive west.

If the living beings stop evolving, they can maintain the life energy in the body in a state of equilibrium, and live for a longer time.

However, the path of cultivation is like sailing against the current, and if you don't advance, you will retreat.

If you give up the body for the sake of immortality, over time, the body will degenerate, which will still lead to an imbalance of life energy in the body, and suddenly die violently.

The Source Spirit Heart Sutra is a mental method that focuses on the cultivation of life energy, which allows cultivation to not only evolve the body, but also obtain inexhaustible life energy, allowing cultivators to achieve true immortality without being accidentally killed or killed by others.

It's just that the only drawback is that to cultivate this mental method, one must have an extremely rare pure wood elemental attribute physique, and the pure wood elemental physique, among all living beings, only vegetation-type creatures may appear, even among vegetation-type creatures, it is extremely rare. As for other non-vegetation creatures, it is more difficult to find a creature with a pure wood elemental physique than to find a needle in the universe.

Obviously, Ruan Lingyu did not possess this kind of physique, but Fang Xingchen inexplicably gave Ruan Lingyu this kind of physique when he asked Ruan Lingyu to try to cultivate the Source Spirit Heart Sutra. Even Fang Xingchen himself easily learned the Source Spirit Heart Sutra.

And all of this, Fang Xingchen, Ruan Lingyu, and Wukong Kong were completely unaware of the hidden cultivation restrictions of the Source Spirit Heart Sutra.

Many years later, when Wukong Kong took the Source Spirit Heart Sutra to the Sage Library of the Terran universe to exchange treasures, he learned that the hidden cultivation restrictions of the Source Spirit Heart Sutra only required a pure wood element physique, and there was no so-called racial distinction. However, this cultivation restriction alone will put the entire Terran universe by 99.99 percent...... of creatures are out of the door.

Fang Xingchen and the others, after studying the origin of the life energy of the Heavenly Palace, headed towards the South Heavenly Gate outside the Baizhang Open.

Following the white jade ground that stretched under their feet to the front of them, the two of them quickly walked in front of the four white jade corpses in armor standing in front of the Nantian Gate.

After carefully observing the four white jade skeletons, Fang Xingchen found that they were all eight feet tall, with thick bones, and the armor they wore on their bodies was white armor, cyan armor, red armor, and green armor, which looked majestic and solemn before their deaths, and their momentum was surging.