Wang Xian rode on Peng's back, frowning and thinking. If it hadn't been flying less than a mile above the Huilong Grass just now, it would have almost missed this batch of Huilong Grass. It stands to reason that Chi Xia Peng's divine sense can be explored within a maximum radius of thirty miles, why didn't he discover it in advance.

After thinking about it, I thought of the answer. Huilong Grass, like the main medicine of the other four-flavor refining Zhuji Dan, is a low-level top-grade spirit grass. The aura contained in the rhizome continued to emanate into the air, causing spiritual power fluctuations, so that it could be detected by the divine consciousness of the monks in the early stage of foundation building twenty or thirty miles away.

However, this time, when the Huilong grass was growing, hundreds of crocodile eggs were pressed on it, constantly devouring the aura from the ground of the rhizome.

A large amount of aura is inhaled into the crocodile egg and transformed into the spiritual power of the little crocodile in the egg. As a result, the Huilong Grass seemed to be filtered, and the aura emitted into the air was slower and less, causing less fluctuations in spiritual power. In the distance, it naturally did not attract the attention of Chi Xia Peng and Wang Xian.

Wang Xian understood from this and the other that Qi Peng searched in the air, and there were indeed many drawbacks. In the vicinity of most of the spirit flowers and spirit grasses, there are demon beasts that absorb their spiritual energy to cultivate. The more the demon beast absorbs the spiritual energy near the spirit grass, the smaller the spiritual power fluctuation emitted by the spirit grass. The last purple epiphany was only discovered inside and outside the **.

He thought that Chixia Peng's divine sense could reach a radius of thirty miles, and he could search the ground by flying back and forth from north to south in the sinkhole a few times, but it seemed that he was just taking it for granted. Along the way, I don't know how many spiritual flowers and spiritual grasses with small spiritual power fluctuations were missed.

However, Wang Xian quickly figured it out, and although the omission was great, the effect was still a little better than searching slowly on the ground, but it was not as good as he imagined.

On the afternoon of the sixth day, Wang Xian finished searching the surface part and rushed to the vicinity of the entrance to an underground tunnel in the northwest of the sinkhole. He received Chi Xia Peng, meditated on the ground and breathed, recovered his divine consciousness that had been greatly lost in the past few days, and after preparing to breathe for a night, he would enter the underground layer early in the morning to search.

The underground layer is densely covered with tunnels, and there are countless burrowing monsters. These monsters generally sleep soundly at night, and during the day, they go out from the holes they often go to the ground to feed. Or wait directly in the underground layer and ambush other monsters passing by.

Monks who enter the underground layer of the trial ground to search for spiritual objects are often day and night. Because of the slightest movement at night, it is easy to wake up a nearby demon beast. Once the awakened demon beast roars, it will immediately alarm a large number of demon beasts, and it is very easy to cause a large group of demon beasts to besiege the human monks. Demon beasts, like humans, are awakened by outsiders in their sleep, and they will be furious and aggressive.

During the day, it is different, all kinds of monsters have set out, looking for mates, foraging, drinking, playing, and the movement is quite large. The human monks acted at this time, which was not only convenient for discovering the traces of demon beasts early, but also not attracting the siege of other demon beasts due to the roar caused by the fight.

During the day, few monsters are interested in fighting in other caves. In the sinkhole, where the weak eat the strong, it is normal to have fights during the day, but it is not normal if there is no fight.

Hua Tianzong found two or three safer entrances and exits in the three underground areas, and marked them on the map.

These cave entrances are all former sect monks, who killed the demon beasts living in the cave and found the bottom of the cave. The part that connects the bottom of the cave to the underground layer is blocked with a boulder outside the cave. So that other monsters can no longer use this cave to communicate with the underground layer. However, the monks of the sect can use their mana to move a stone in the corresponding marked part and open and close the passage for entry and exit.

The cave monsters in the sinkhole will generally dig their own soil and build a cave at the bottom of the cave connected to the underground layer to live, so that when they encounter the natural enemies on the ground, they can retreat into the labyrinthine tunnels of the underground layer to hide.

There are several particularly cunning monsters, and there are several caves that communicate with the underground layer, changing their habitats from time to time. Whether it is a natural enemy monster beast from the ground or from the ground, if it chases it, it will be stunned by its repeated entry and exit in several caves, and finally retreat.

Once a monk slays a demon beast, he often gains one or more cave passages to the underground level.

As the seventh day drew to pass, the sky began to light up. Wang Xian's divine sense found that within ten miles of the vicinity, there were nearly 100 demon beasts of level 1 to level 4, who walked out of the cave and started a day of foraging and hunting.

The king entered the cave first, cast a secret spiritual trick, and probed to the bottom of the cave. It is a circular cave with hard earth on all sides, and the cave is more than a zhang wide, slowly facing downward. Wang Xian held a piece of fluorite in his hand, and under the light of the faint light, he walked down.

After walking for about a few hundred feet, I turned two corners and arrived at the bottom of the cave. The bottom of the cave can no longer penetrate the bright light outside the cave, it is completely dark, purely relying on the fluorite in the hand, emitting a faint light, illuminating the bottom of the cave brightly.

The bottom of the cave is slightly larger, with a radius of three zhang. The king first saw a boulder two feet square embedded in the wall of a cave in hard earth. A part of the boulder, with white fluorite powder, is painted with a circular mark.

This is the position where Hua Tianzong signaled the rear entry to the same door to slap the switch. Wang Xian turned sideways, leaned against the boulder, and listened carefully to the movement behind the wall. Sure enough, there was a hollow feeling behind the cave wall, and there were some low beast roars, which were far away and could be faintly heard through the cave wall.

Wang Xian took a step back, cast the Hidden Spirit Technique, exercised his martial arts, and struck the cave wall inside the circular sign with one palm. All I could hear was the hissing sound of the stone door grinding against the door frame, and a round crack in the cave wall. The round stone plate in the crack is like a door, revealing a crack in the door that only allows one person to pass through, which is a very simple arrangement.

Wang first walked through the crack in the door and pushed the round stone door back into its original state. After closing the door, the cave suddenly became dark. The king first propped up the back of the door, calmed down, and looked around with all his eyes.

I saw that behind the door, there was also a circular mark painted with fluorite powder, which was the position of the palm to open the door from the hole. Wang Xian used his hand to exert force, and pushed the door in other places outside the marker, but felt that the stone door did not move at all. It seems that without hitting the mark, those monsters really can't get in and out of here.

Wang Xian raised the fluorite in his hand, and from behind the door, he could see that the boulder used to make the door and door frame just blocked a tunnel behind him. The walls of the cave are still the same hard soil as before, and the size is still more than a foot in diameter, the same as the open hole in the ground.

Wang Xian walked down the hole, but only a dozen zhang, and then came to a three-fork entrance, and there were two forks in the front of him, one left and one right.

Wang first took out the jade slip and carefully checked the map of the northwest underground tunnel in the slip again. On the map, there are not only the main ground road routes that the seven major sects and more than 20 first-class sects have jointly revised and used, but also some secret ground road routes that have been discovered and retained by Huatian Sect.

This is so that in case the sect monks are attacked by other sects, they can retreat into the nearest tunnel they are familiar with, escape as soon as possible, and escape to the ground.

On the ground, there were still very few monks who dared to risk being discovered by other trial cultivators at any time to hunt down the monks of the Seven Great Sects.

In previous years, the monks of Huatian Sect relied on the main road route to search. For many unexplored routes, you will encounter forks in the road at any time, and you will go in and explore it according to your luck, but you will not go too far, so that you can return to the main road line at any time and avoid getting lost.

Wang Xian knew that the main road route was often walked, and it was basically impossible to find any spiritual flowers and spiritual grasses. Only from the numerous unexplored forks in the road that dot the main route, try your luck. Wang Xian slapped the spirit beast bag and released the Drill Sky Mouse. He followed the guidance of the map, used the Divine Sense Jade Tablet, commanded the Drill Mouse, chose the fork to the left, and searched forward.

This drill rat was originally placed in Zhonglong Mountain for Luo Cheng to domesticate. Before Wang Xian left, two months in advance, he asked Luo Cheng to make a jade plate of divine consciousness, and put the Diamond Rat into the spirit beast bag and handed it to Zhu Yuan of Baishamen. Zhu Yuan escorted the jade plate and spirit beast bag to South China Peak and handed them over to Wang Xian.

Wang Xian smelled the purple epiphany and huilong grass that he had just obtained to the Drill Sky Rat so that it could familiarize itself with the grade of spirit grass it was looking for. Although the Drill Sky Rat is a second-level spirit beast of the earth system, and its cultivation is not high, it is a good hand at drilling and tracking. Underground, it was like a fish in water, its eyes fluttering, its beard shaking from time to time, and it began to probe and move forward.

After walking a few hundred zhang and turning a few corners, Wang first switched from the secret road route of Huatianzong just now to the open main route. After only half a mile along the main route, Wang Xian found three unknown forks, and it seemed that the underground was indeed full of forks.

Wang Xian didn't choose these three forks, psychologically, he felt a little deeper, a little farther away from the entrance, a little more dangerous, the less chance the fork was detected by others, and the more chances he had.