"Who's blocking it?" Iron Shoes asked suspiciously.

"Cultivators." Zuo Dengfeng is the right color opening, the stalagmites and stalactites in this area have traces of destruction, and those destroyed stalagmites and stalactites are not scattered around here, which indicates that these stalagmites and stalactites are very likely to be stacked in the passage ahead, and the stalactites and stalagmites themselves are also very hard, and only the cultivators can destroy them.

"Amitabha." Iron Shoes didn't pick up Zuo Dengfeng's words, what he saw at the moment was Thirteen and the boss wantonly killing in front of him, making flesh and blood flying.

Whether it is a person or an animal, there is a psychology that is not willing to be left behind, Thirteen and the boss are in this state at the moment, fighting together and no one is far behind, quickly slaughtering those poisons that counterattack back, in fact, Zuo Dengfeng is not sure whether those animals are poisonous or not, but in the unknown situation, they are poisonous.

Zuo Dengfeng knew that Iron Shoes was not a person who could analyze the problem together, and after speaking, he shifted his gaze to the passage in front of him, and the end of the passage was indeed not a complete stone wall, but stalagmites and stalactites piled together, and there were also some stones of other shapes.

The stones were piled up to the top of the cave, and a small amount of dripping water from the top of the cave dripped down the stone pile, and the water in the cave had a large amount of calcium, which condensed the piled up stone piles together, so that the stone piles were like stone walls filled with cement, impermeable to the wind, and extremely strong.

"Why are those people blocking the passage?" Iron Shoes retracted his gaze and asked.

"Prevent what's inside from coming out." Zuo Dengfeng replied casually.

Iron Shoes nodded when he heard this, and at the same time took a few steps forward to watch his attention, this move was intended to protect the Boss and Thirteen.

"The stone wall is so strong that the contents can't get out, and even if they do, there's no big danger of running out." Zuo Dengfeng said.

Hearing this, Iron Shoes turned his head and glanced at Zuo Dengfeng, showing doubts but not speaking.

Although the iron shoes did not speak, but the puzzled look showed that he did not understand why Zuo Dengfeng judged that the things inside were not dangerous, Zuo Dengfeng smiled when he saw this and opened his mouth to explain, "Those stones were stacked there many years ago, and they were not strong at the beginning of the stacking, if the animals inside were dangerous, they could be completely rushed out." ”

"When was the passage blocked?" Iron Shoes glanced at the stone wall in front of him.

"I don't know, it should have been a hundred years ago." Zuo Dengfeng guessed that there were few karst caves in the north, and he had hardly touched this kind of terrain before, so he could not deduce when the stalagmites were destroyed from the stalagmites that had been rebuilt on the ground and the calcium on the condensed stone walls, and he could not infer the time when the passage was blocked.

Hearing this, Iron Shoes nodded again, and at this time, Thirteen and the Boss had already killed all the poisonous insects in the passage and ran back, surrounding their respective masters.

Before this, Iron Shoes had been domesticating the boss as a pet, but he didn't expect it to have a majestic side, and when he saw the boss come back, he immediately gave praise and praise, and the boss enjoyed this praise very much, squinting his eyes and cooing.

Thirteen did not mean to invite merit and reward, and Zuo Dengfeng did not praise it, the thirteen surnames were arrogant and not used to being praised for little things.

Zuo Dengfeng walked to the stone wall in front of him, because the stone wall is made of stalagmites and stalactites and other strange stones, so the surface is uneven, Zuo Dengfeng stopped in front of the stone wall and looked at it for a while, and found that the entire stone pile has been completely condensed together by the calcium contained in the water.

Zuo Dengfeng immediately raised his hand and tried to push the stone wall, but the stone wall did not move, Zuo Dengfeng changed his strategy and grabbed an exposed stalagmite and pulled it out, but it was also strong and abnormal.

This discovery made Zuo Dengfeng secretly happy, the stronger the stone wall condensed, the older these stalagmites and stalactites were stacked here, if it was stacked here three thousand years ago, it means that this cave is the gateway to the tomb of Ba Wang Ji Hao.

Thinking of this, Zuo Dengfeng raised his aura with both palms, and attacked the stone wall, and the stone powder splashed everywhere under the blow, and after the stone powder settled, the main body of the stone wall was still as stable as a rock.

"I'll come." Iron Shoes walked over with their sleeves rolled up.

"This wall is nine feet thick, no, it should be a foot." Zuo Dengfeng judged the thickness of the stone wall through the shock of the aura, nine feet is three meters, and three meters and three is one zhang.

"Amitabha, we can't open it together, so let's blow it up with a grenade." Iron Shoes didn't even dare to try when he heard this, and the one-zhang thick stone wall was not something he could destroy at all.

Zuo Dengfeng did not take the advice of the iron shoes, because there were only twenty grenades, and he was reluctant to waste them at the critical moment, in addition, the limestone has a certain toughness in addition to being hard, which is slightly similar to the surname of glutinous rice sealing soil, and the effect of using grenades to bomb this rock is not good.

"Master, use your Pure Yang Gauntlet to heat this area." Zuo Dengfeng pondered for a moment, pointed to the iron shoes in the center of the stone wall, and said.

Iron Shoes immediately stepped forward when he heard this, he didn't know the reason why Zuo Dengfeng asked him to do this, and he didn't ask much, firstly, he knew that Zuo Dengfeng had a reason for everything, and secondly, although Zuo Dengfeng had a smiling face when he talked to him, he usually frowned a lot, and he didn't want to ask a strong question to annoy Zuo Dengfeng.

Pure Yang True Qi arrived, a large amount of mist suddenly rose on the stone wall, the thick fog made the iron shoes very fulfilling, because these fogs were caused by him, after a while, the rocks were roasted dry, the fog disappeared, the surface of the rock was roasted by high temperature, and the stone chips flying out of the surface were very high, although the high temperature was emitted by the iron shoes, but he himself could not ignore the high temperature, so he could only emit the aura to form a barrier to block the flying stone chips.

"Heat up the whole area." Zuo Dengfeng said.

"What the hell are you trying to do?" Iron Shoes still couldn't help but ask.

"Freeze this stone wall to pieces." Zuo Dengfeng said.

Iron shoes were originally confused, and he was even more confused with Zuo Dengfeng, his thinking could only understand the truth of one turn, and what Zuo Dengfeng said often had two or three turns, taking the things in front of him as an example, he didn't understand why he had to heat the stone wall since he wanted to freeze the stone wall.

Zuo Dengfeng had been watching the movements of the iron shoes, while assessing whether the temperature had been transmitted to the inside of the stone wall.

"Amitabha, how long will it take?" It didn't take long for the Iron Shoes to feel the aura in his body fluctuate, and the pure yang gauntlets, like the Xuanyin gauntlets, had to consume more than double the aura to force out the heat.

"Go on." Zuo Dengfeng frowned and spoke, he knew very well that this move was very depleting of the aura of the iron shoe, but the temperature must reach a certain level before it was possible to make the rock suddenly cold and crack in a state of high temperature.

Iron Shoes can only continue to emit pure Yang True Qi when they hear it, and they can't feel anything when they emit Pure Yang True Qi in a short period of time, and after a long time, Iron Shoes will understand that Pure Yang True Qi is not for nothing, Pure Yang Gauntlets are just a carrier of transformation, and Pure Yang True Qi is exchanged for more than twice its own ordinary aura through this carrier.

"Almost." It didn't take long for the iron shoes to turn back again, and in just half a pillar of incense, he had already consumed fifty percent of the spiritual energy in his body.

"Hold on a little longer." Zuo Dengfeng shook his head and said, he didn't know how high the temperature had to be to be effective, he only knew that the higher the temperature, the greater the possibility of success, at this time, the iron shoes had consumed a lot of aura, if it didn't work in one fell swoop, he had to start again, and the aura would be even more consumed.

Hearing this, Iron Shoes looked helpless, and raised his hand again to emit pure yang true qi at the stone wall, at this time the temperature of this stone wall was already very high, and there were no more stone chips collapsing.

"Master, step back ten feet." Zuo Dengfeng saw that the fire had arrived, so he shouted at the iron shoes.

Iron Shoes was relieved when he heard this, and quickly dodged and retreated, Zuo Dengfeng was already gathering momentum, and after Iron Shoes retreated, he immediately flashed forward and emitted a chilling Xuanyin True Qi.

At this time, the temperature of this stone wall was extremely high, and after the Xuanyin True Qi touched the stone wall, fog immediately appeared on the stone wall because of the large temperature difference, and at the same time, there was a clicking sound of the rock breaking, and the cold air did not stop, and the fog did not disappear.

Zuo Dengfeng has been listening carefully to the clicking sound of the rock while emitting the Xuanyin True Qi, and as long as the clicking sound continues, the Xuanyin True Qi has been emitted.

After a moment, the clatter of the rock shattering stopped, and Zuo Dengfeng withdrew his Xuanyin True Qi and returned to the position where the iron shoes were.

"The old man understands, you have smashed the stone wall." Iron Shoes suddenly realized.

"Yes." Zuo Dengfeng nodded and replied.

"Why don't you freeze it first, and then let the old man heat it." Iron Shoes asked suspiciously.

Zuo Dengfeng was stunned when he heard this, what the iron shoes said was right, first hot and then cold and then hot are actually about the same, but before that, he ignored this question, and the words "hot expansion and cold contraction" kept coming to his mind, so he put the heat in front, not intentionally letting the iron shoes act as coolies.

"The molecular structure of this substance must be heated first." Zuo Dengfeng thought for a while and said, he could only use foreign terms that appeared at the end of the last century to fool the iron shoes.

Iron Shoes, a monk who practices martial arts and chanting scriptures, knows what Western science, and when he heard this, he was really blinded, nodded and said no more.

"Master, those stones have been crispened, rest for a while and then let's go." Zuo Dengfeng put down the wooden box.

"It's fine." Iron Shoes nodded.

Zuo Dengfeng opened the wooden box and took out a bottle of liquor and handed it to the iron shoes, and then sat on the wooden box to rest, the iron shoes put down the wooden box and sat up, took the liquor and unscrewed the lid.

"Master, be mentally prepared, what is inside may not be the same as what is outside." Zuo Dengfeng gave the iron shoes a preventive shot, and there must be a reason why this stone wall was piled up here, and the biggest possibility is a dividing line between inside and outside.

Tie Shoe agreed casually, it was normal for him to encounter few things with Zuo Dengfeng, and he had long been used to it.

After a short rest, the two walked to the front of the stone wall, the stone wall had already appeared a large number of cracks after the sudden heat and cold, and after a while, Zuo Dengfeng raised his hand to destroy this stone wall, and the scene in front of them was much more than the two expected.

Behind the stone wall is a small low temple......