Wu Zhiyuan walked to the coffin and leaned over to see that the coffin was empty, without any handles, but a hole the size of a bowl in the middle of the coffin caught his attention.

The edge of the hole is neat, obviously it was deliberately left when the coffin was made, but the coffin is sturdy and impermeable, so as to ensure that the body of the deceased in the coffin is properly protected from insects and ants, but why is there such a hole at the bottom of this coffin?

Wu Zhiyuan faintly felt that this hole was not simple, he looked down at the hole carefully, it was dark inside, and he couldn't see the situation inside, he rolled up his sleeves again, and put his hand into the hole to test.

Except for the feeling of coldness in the cave, there was no other abnormality, Wu Zhiyuan stretched out half of his arm, and did not touch the bottom of the cave.

"I didn't think this hole was quite deep." Wu Zhiyuan muttered to himself in his heart, he turned around and searched in the ear room, wanting to find something to throw in to explore the reality in the cave.

The bronze mirror was too big to throw in, Wu Zhiyuan searched for it, and finally found a copper coin on the ground, this one was left at that time, and the other copper coins were stuffed into the mouth of the belly corpse monster baby by Wu Zhiyuan in an emergency, and turned into blood along with the strange baby.

Wu Zhiyuan put the copper coin at the bottom of the coffin at the hole, as soon as he let go, the copper coin fell into the hole, rolling down the cave wall, only to hear the copper coin and the cave wall collide, making a "clanging" sound, endless, very beautiful.

Wu Zhiyuan listened attentively, wanting to hear what sound the copper coin would make when it fell to the bottom of the cave, and based on this sound, he could basically judge what was hidden in the cave.

To Wu Zhiyuan's surprise, after the copper coin fell into the hole, the sound of "Zheng Zheng" has not stopped, and the sound has not weakened in the slightest, but has continued to ring, as if the copper coin has not fallen to the bottom of the cave.

"This hole is so deep?" Wu Zhiyuan secretly wondered in his heart, the sound of copper coins was endless, indicating that it had been in the process of falling, and the longer the fall, the deeper the hole.

As a child, he played a similar game with his playmates, picking up rocks and throwing them into a dry well on the outskirts of the village. In Wu Zhiyuan's memory, the dry well on the outskirts of the village was already very deep, and standing at the mouth of the well would make you feel dizzy, but despite this, if a stone is thrown down, it will immediately fall to the bottom of the well, making a "bang" sound.

Now I haven't heard the sound of the copper coin landing, could it be that I have lived in the ear room for a long time and have a hearing problem? Wu Zhiyuan rubbed his ears with his hands, and then listened again, and what came into his ears was still the pleasant "Zheng Zheng" sound from the copper coins rolling down.

Time slipped quietly, about three quarters of an hour later, Wu Zhiyuan could still hear the sound of "Zheng Zheng", even if he was puzzled by this phenomenon, he began to feel a little excited. He simply sat down with his back to the coffin, not paying attention to when the copper coin fell to the bottom of the cave.

At this moment, Wu Zhiyuan suddenly heard a clear sound of "bang", like the sound of a copper coin falling into the water, and at the same time, the "Zheng Zheng" sound of the copper coin rolling down also stopped abruptly.

"To the bottom of the cave?" Wu Zhiyuan hurriedly got up and leaned over to check the cave, but it was still dark and he didn't find anything.

The copper coin rolled down for three quarters of an hour before falling to the bottom of the hole, so how deep was the hole?

Wu Zhiyuan suddenly felt that this was really incredible, a hole the size of a bowl mouth actually had an unimaginable depth, so what was the purpose of this hole? Why did the female corpse lie on top of this hole?

A bright light came in from the hole at the top of the ear chamber, which happened to shine on the hole at the bottom of the coffin, Wu Zhiyuan looked up and saw that the hole above was similar to the hole at the bottom of the coffin: the hole was the same size, and both were the size of a bowl.

Was this a fortuitous coincidence or a deliberate arrangement? Wu Zhiyuan suddenly felt that this was most likely deliberately designed by the person who put the female corpse in the coffin in the first place, and the fact that the female corpse could raise the corpse was definitely related to this elaborate design. In other words, the person who put the female corpse in the coffin designed it in order to make the female corpse undergo a corpse transformation.

As for the convex bronze mirror on the lid of the coffin, it scatters the moonlight and daylight shining in from the top of the coffin so that it is not absorbed by the female corpse in the coffin. Wu Zhiyuan turned his head and saw the Taoist priest at the door who only had a pile of bones left, and he had a vague answer in his heart.

So the whole thing basically has a general outline, when the coffin was placed in the person who learned that there was such a mysterious cave here, which is the best place to raise corpses, so he placed the female corpse coffin here, not wanting this matter to be known by a Taoist priest, so he came to break the situation of raising corpses. The person who went down to the coffin fought with the Taoist priest, and the Taoist priest was defeated, and he would die in this ear chamber.

However, after thinking about it, Wu Zhiyuan felt that there was something unreasonable about this matter, that is, since the person who got out of the coffin defeated the Taoist priest, why didn't he take away the convex bronze mirror that the Taoist priest placed on the coffin, but let it be placed here to destroy the corpse raising bureau?

After pondering for a moment, Wu Zhiyuan suddenly felt that the identity and whereabouts of the person who went down to the coffin had become the core and key to the whole problem, the identity of the person who got into the coffin was easy to determine, and he was undoubtedly the owner of the Gu weapon in the ear room, he refined Gu poison, and it was very likely that he was also the person from the Black Descending Gate. Wu Zhiyuan boldly speculated again, thinking that it is very likely that this Taoist priest was not alone when he came, but also brought a helper, although the Taoist priest was defeated and died, but his companions continued to fight with the person who fell into the coffin, and the final outcome is unknown, but they must have stayed away from this Longshan cave, and for some reason they have not been able to come back, so everything here has remained the way it was at that time.

Later, the Moon Shadow Fuxian inadvertently took away the bronze mirror and broke the Taoist formation, so that the female corpse in the coffin was able to absorb the moonlight and raise the corpse.

According to the current situation, this is basically the process, but speculation is speculation after all, Wu Zhiyuan did not fully believe in such a fact, but there were many mysteries in front of him, and curiosity drove him to get to the bottom of these mysteries. Now the urgent need is to find a way to get out of this ear room, and the rest is no longer important.

Now that the hope of finding the door opening mechanism from the coffin has been completely shattered, Wu Zhiyuan is inevitably a little disappointed, could it be that this stone door cannot be opened without a mechanism? Or is the mechanism for the opening of the stone door placed outside the door?

Wu Zhiyuan looked around the room, and the empty ear room was only the coffin at his feet, a stone table in the middle, and a large urn in the corner.

The large urn is about waist-high height, the mouth of the urn is large, and it is very inconspicuous in the corner of the wall.

"The big urn?" Wu Zhiyuan's heart was suddenly shocked, and he secretly thought that everything in this room had been checked, even the various Gu weapons on the stone table had been checked one by one, but the big urn had not been seen, could it be that the mystery was in the big urn?

With this in mind, Wu Zhiyuan was about to check the situation of the big urn, and at this moment, he clearly saw that the big urn suddenly shook!