This iron pillar is hundreds of meters long and more than ten meters in diameter, and it is extremely thick, but such a thick iron pillar only pierces this heart.

It is hard to imagine what a terrifying existence it must be to have such a huge heart, and most importantly, the heart has become such an astonishing scale, so what a terrifying size the creature with this heart should be.

However, what surprised Tang Yi the most was that although this heart had detached from its body, it was not completely silent, almost every once in a while, it would bang and beat.

"Why did you kill me?"

While the heart was beating, not only did it exude a heavy blood qi, but at the same time, the questioning voice sounded again.

Bathed in the blood and qi in the sky, Tang Yi only felt that he was like a spring breeze, took a deep breath, and immediately felt that the blood and qi poured into his body, as if washing the muscles and cutting the marrow, the physical body was actually improved again, and the whole person had a feeling of refreshment.

The most important thing is that Tang Yi clearly feels that the blood of the ancestral witch in the center of his eyebrows has actually been strengthened a little.

"Could this be the heart of the Ancestral Witch?"

Tang Yi looked at the huge heart in front of him, and his heart was shocked, if this is the case, then how huge the ancestral witch should be, I am afraid that it is at least a burly giant with a height of nearly 10,000 zhang!

But these are not important, the important thing is that Tang Yi has gained huge benefits in this heavenly blood, Tang Yi feels that if he stays here for a year and a half, his physical body can not only be strengthened, but the blood of the ancestral witch in his body may also reach an astonishing level.

However, just as the blood qi in the sky had just risen, golden light appeared on the iron pillar again, pressing the blood qi back into the heart again.

"This golden light?" Tang Yi stared at the golden light on the iron pillar, one thought after another in his mind, from the formation runes contained in it, he understood a lot of Tao and reason, Tang Yi only felt that his formation attainments had actually made a breakthrough.

"What kind of person can refine a magic weapon that contains such a way and reason?" Tang Yi pondered while feeling it: "It stands to reason that a formation master who can have such means must not be a nameless person, even if thousands of years have passed, there should be a legend of him in the cultivation realm!"

However, Tang Yi searched the entire memory, and did not find such a powerful existence.

It should be said that in his previous life, Tang Yi was a top-level formation master in the cultivation realm, and there was no one else in the world who could compare with him.

However, with Tang Yi's formation attainments, he could only understand one-tenth of them.

From this, it can be imagined that the person refining this iron pillar should have a terrifying existence with a high formation attainment, but such a terrifying existence is unknown in the cultivation realm.

And how did this ancestral witch provoke it, to such a terrifying existence, not only was he killed, but after his death, his heart was dug out and nailed here.

However, it can also be seen from the repeated sentence 'Why did you kill me?', and it seems that this ancestor himself doesn't know why the other party wants to kill him, so he will have such a big grudge after death.

But none of this is important, the important thing is that Tang Yi just glanced at the golden light in a hurry, and he realized a lot of Tao and reason from it.

These ways and principles are mysterious and mysterious, and ordinary people are afraid to understand it for a lifetime, but they can't see the mystery in it.

But what kind of person is Tang Yi, in his previous life, he was known as the first day of the cultivation realm, and the Immortal Emperor Ye Wuji also needed to spend thousands of years to enter the Immortal Emperor realm, and this was because he had the Taixu Immortal Palace behind him, regardless of the cost of resource support.

And Tang Yi, on his own, spent only five hundred years to step into the half-step Immortal Emperor, and he could even fight with Ye Wuji to the end.

In terms of talent and qualifications, Tang Yi is a well-deserved first-day talent in the entire cultivation realm.

When Tang Yi digested and absorbed the Tao and reason that he had just realized.

"Why did you kill me?"

The voice sounded again, and the heart of the ancestral witch, which had been silent for a while, beat again, and the blood and qi in the sky spurted out.

I saw Tang Yi's chest and abdomen, as if pulling up the bellows, between exhalation and inhalation, the blood and qi in the sky were inhaled into Tang Yi's abdomen, and the frequency was extremely fast.

And just as Tang Yi absorbed and refined the blood qi in his body, the iron pillar also shone with golden light, trying to suppress those blood qi.

Tang Yi was refining the blood qi in his abdomen while staring at the golden light that wandered on the iron pillar.

Whenever the blood qi shines out, a golden light will inevitably flash on the iron pillar to suppress those blood qi, and Tang Yi will inevitably take this opportunity to spy on the Tao and reason contained in the golden light.

"I see!"

After comprehending it a few times, Tang Yi suddenly understood that it was no wonder that An Bei Qingming had gone through nine deaths and a lifetime in this ancestral witch cave, but he also got a great opportunity.

Feelings, this An Bei Qingming, it is in this ancestral witch cave that he has realized all the yin and yang spells.

The so-called yin and yang spell is applied to people, but the runes of the magic circle are engraved on the magic circle and magic weapons, but there is a certain connection between the two.

Although ordinary ordinary people comprehend a lifetime here, they may not be able to comprehend the slightest trace of Tao and reason.

However, Ann Bei Qingming is a masterpiece who is not born in the world, and he actually realized various magic seals and spells here, and finally became his own family and created an onmyoji, a profession that has a different way.

Tang Yi concentrated on observing, and found that the blood qi of this heart, every time it exploded, the golden light on the iron pillar would be consumed by a minute.

According to Tang Yi's estimate, if there are 10,000 years, the magic seal on this iron pillar will be consumed.

Although 10,000 years is a very long time, but for the monks, it is like a white horse passing through a gap, if you don't hurry up, I am afraid that there will be a lot less enlightenment.

Tang Yi didn't dare to delay in the slightest, whenever the blood qi erupted, he would take the opportunity, not only to absorb the blood qi in the sky, but also to carefully observe the golden light on the iron pillar that suppressed the heart.

Time passed, and after half a day, Tang Yi stood up, and with a wave of his hand, the golden light in his palm flashed, and under the mana structure, between his palms. Suddenly, there was an arrow composed purely of mana.

"It turns out that this is the 'Heart Devouring Mantra'!" Tang Yi smiled slightly, and the arrow composed of mana in his palm suddenly launched out, and wherever he went, the blood qi in the sky suddenly did not collapse and disperse.

After some observation, Tang Yi suddenly understood that An Bei Qingming must have been here back then, and from the top of the iron pillar, he realized all the yin and yang magic seals, including the 'Heart Devouring Mantra'.

However, Tang Yi is so talented, he realized everything in just half a day, and drew inferences from one another, but instead realized the method of cracking the 'Heart Eater Mantra', and set out to break the 'Heart Eater Mantra' in his body!