Going deep into the cave, Lin Dong's face was even more surprised, this spiritual cave was really good!

"The concentration of aura is only equivalent to the seventh-level spirit room, but if you practice here, the effect will definitely be better!" Lin Dong said secretly in his heart.

"Master, do you want me to continue digging?" Cao Song said.

Lin Dong waved his hand: "No need for the time being, you retreat to the entrance of the cave first, and guard the entrance of the cave with Feng Cheng, without an order, don't come in, I will practice here for a while!"

"Yes, master!"

Cao Song retreated, Lin Dongbao's stick appeared in his hand, he struck with all his strength, but he also knocked down a small piece of rock, the rock on this side is very hard, much harder than the Zhenjiang Imperial City Wutai!

"It's extremely difficult to get inside, and I hope I can escape into this rock. Lin Dong thought that his hand pressed on the rock, and after ten or so seconds, Lin Dong's hand gradually sank into the rock.

"It's much more difficult than normal soil rocks, but you can barely get in!"

Lin Dong secretly said in his heart, the earth martial intent was used with all his strength, and Lin Dong's body slowly sank into the rock.

Because the rock is too hard, Lin Dong can only advance about two meters per minute, however, this is also much faster than punching holes, even if a martial sect like Cao Song and them fight, it is estimated that they can't advance two meters in one day!

Moreover, the hole will make a loud noise, and it is very unsafe to be here for a long time, if not, even if it takes a year or two, Cao Song estimates that this hole will be deeper!

Five meters, ten meters... The deeper he went, the more Lin Dong felt that the aura was sufficient, to a depth of ten meters, the concentration of aura should be equivalent to an eighth-level spirit room, and to a depth of twenty meters, the concentration of aura reached the standard of a ninth-level spirit chamber!

"Good guys!"

Lin Dong exclaimed in his heart, and continued to move forward, the concentration of the aura was still increasing, Lin Dong felt that the surroundings were a little wet, it didn't seem to be water, it was the spiritual liquid formed by the aura gathering to a certain extent!

"Drip, drip!"

When he advanced to a depth of forty meters, Lin Dong seemed to hear the sound of water droplets, and after another half a minute, Lin Dong felt his hand leak out of the rock, and there should be a cave inside.

"Don't be any monsters. ”

The hand was withdrawn, Lin Dong moved forward cautiously, when he got closer, Lin Dong's martial soul went out first, and the martial soul turned into a thunder eagle and let Lin Dong see the situation in the cave, which was a relatively large cave, and there were rock thorns like stone stalactites at the top of the cave, and drops of liquid slowly fell from the tips of the stone thorns.

There was water accumulating under the cave, the depth of the water was about half a meter, Lin Dong's heart was agitated, and the water exuded a faint light, this was not ordinary water, but the spiritual liquid formed by the gathering of spiritual energy!

Moreover, this spiritual fluid is different from the little spiritual fluid contained in the rock, they are purer and contain more energy!

"There are no monsters. ”

Sure that there were no other creatures in this cave, Lin Dong carefully escaped from the rocks!

"If Cao Song knew about the situation here, even if he took great risks, he would have opened up this passage of dozens of meters!" Lin Dong secretly said in his heart, his face showed excitement, this is spiritual liquid!

Moreover, it's not just a little bit of spiritual liquid, the spiritual liquid accumulated in this cave is estimated to be two or three hundred cubic meters!

Sometimes the liquid is sold in auction houses, and it's not about cubes, it's about two!

One cubic decimeter of spiritual liquid, the value is about equivalent to 10,000 taels of gold, that is still ordinary spiritual liquid, the spiritual liquid on this side is much purer and stronger, they must be more precious!

Even if one cubic meter is only 10 million taels of gold, and two or three hundred cubic meters in front of him, it is worth two or three billion taels of gold, which is a huge wealth! Moreover, Lin Dong estimates that there is a lot of spiritual liquid soaked into the ground, and if a well is drilled on this side, it is estimated that a lot of spiritual liquid can be gathered in the well every day!

"Developed!"

Lin Dong laughed, physical training is very expensive, with these spiritual liquids, it is enough for him to consume for a long time! And with these spiritual liquids to cultivate, the cultivation speed must be much faster!

"Ten days, at most ten days, I can practice to reach the middle rank of martial artist!" Lin Dong's eyes flickered, "But before cultivating, let's put away the spiritual liquid first!"

At the beginning, Lin Dong's Naxu Ring was only a little bit big, but now it is relatively large, and he has more than one Naxu Ring - this time he killed a lot of enemies, and he got more than ten!

Lin Dong had a lot of things that could hold water in the Naxu Ring, but the spiritual liquid was not water, so Lin Dong could only retreat first.

"The hosts. ”

Lin Dong went to the entrance of the cave, Cao Song and Feng Cheng said respectfully.

"Hmm. ”

Lin Dong nodded slightly, "Cao Song, Feng Cheng, do you have anything that can hold a large amount of spiritual liquid?"

Lin Dong also asked, Cao Song had a small chance of having them, and he came out to find a kind of magic tree, and use the trunk of that kind of magic tree to make wooden barrels that can hold spiritual liquid.

"Master, I have this. Cao Song said, a small gourd appeared in his hand, "Master, this is a strange treasure, which I found in a ruin on this island." ”

"What's the function?" Lin Dong took over the gourd road.

Cao Song said respectfully: "Master, this gourd can hold liquid, it can hold hundreds of cubes at a time, I use it to hold wine... However, this gourd can also contain spiritual liquid, which can well ensure that the energy of the spiritual liquid does not pass away. ”

"Oh?"

Lin Dong's eyes showed a look of surprise, if this is the case, then this thing is really a treasure!

There are a lot of space treasures that can hold water, but many space treasures can't hold spiritual liquid!

The spiritual liquid contains powerful energy, and ordinary space treasures will collapse if they can't withstand the space!

"I want this thing!" Lin Dong said.

"Yes, master... Master, I'll remove my mark. Cao Song said.

Cao Song did it himself, and it was naturally easy to clear the mark, and soon, Lin Dong marked the gourd with his mark.

Lin Dong inspected the gourd, there was a lot of wine, about a dozen cubic meters, but it only took up a very small part of the space, and this gourd could indeed hold hundreds of cubic meters of liquid.

"Cao Song, do you want wine?" Lin Dong said.

"Yes, of course. ”

Cao Song took out other containers, Lin Dong transferred the wine in the gourd to him, and took out a lot of water to clean the inside of the gourd, he didn't want Cao Song's wine to pollute the spiritual liquid!

"Keep it guarded, keep it hidden, it's best not to let people find out!" Lin Dong said.

"Yes, master!"

Returning to the cave, Lin Dong threw the gourd into the spiritual liquid, under his control, the gourd appeared suction, and the spiritual liquid was sucked into the gourd relatively quickly, and after two or three hours, the spiritual liquid accumulated in the cave was basically all collected by Lin Dong!

"Tsk, there are about two hundred and eighty cubes, cool!" Lin Dong picked up the gourd, this thing is a space treasure, two or three hundred cubic meters of spiritual liquid was sucked in, and the weight in Lin Dong's hand did not change much.

"Bang!"

Lin Dongbao's stick smashed to the ground in his hand, the ground was very hard and only a small piece was smashed down by him, but Lin Dong was not discouraged, he continued to smash, this smash is a small half a day!

Lin Dong smashed out a pit that was one meter deep but not much big, and he could see that a trace of spiritual liquid flowed into the pit.

"I'm still slow to do this job, when the time comes, call Qin Yan and let her come to this side, with her martial king-level cultivation, it should be easier to dig a deep well on this side!"

There was food in the Naxu Ring, Lin Dong ate some things, and after a little rest, Lin Dong began to practice.

Lin Dong made up his mind to break through to the middle rank of martial artist first, in such a place, it should be possible in eight or nine days!

"Rubbish, it's all rubbish!"

Qin An scolded and was annoyed in his heart, he had already released the news that Lin Dong had entered the red zone, but it had been seven or eight days, and there was no news of Lin Dong or Feng Cheng.

Qin An sent a message to Feng Cheng and them, but it was not successful, and Feng Cheng and the others refused to receive his summons.

"Did Lin Dong bring his Dire Tortoise friend into the Genius Island?" Qin Anxin said secretly, he was startled, if this was the case, then Feng Cheng and the two of them betrayed it could be resolved.

In the face of the Martial King-level powerhouse, Feng Cheng and the two Martial Sect juniors were just scum and not worth mentioning!

"If that's the case, Lin Dong, you're violating the rules. Qin Anxin sneered, "Your Dire Tortoise friend has to be careful here, in some places, the possibility of death is greater than that of Martial Sect!"

......

"Roar!"

Lin Dong let out a roar in his throat, and his whole body was boiling with qi and blood to the verge of breaking through!

Streams of aura continued to enter Lin Dong's body, and with the support of these aura, it was much easier for him to break through!

After the time of half a pillar of incense, Lin Dong let out a long roar, the qi and blood in his body accelerated suddenly, and a faint sound of waves came from his body, as if there were big rivers rushing in his body!

"Martial Master Median!"

Lin Dong breathed a sigh of relief, his movements slowed down a lot, but the blood qi in his body did not slow down for the time being, they continued to flow through every part of his body, strengthening every inch of his skin and every cell!

"The muscle strength has increased a lot, and the inward, bone marrow, and even the nerves have been synchronously enhanced, which is much stronger than the median of ordinary martial artists, and the more you go to the back, the greater the advantage compared with the average physical practitioner!"

Lin Dong secretly said in his heart, half an hour passed, he stopped practicing, on this side, half an hour was enough to stabilize the realm of the middle martial artist!

"The martial soul absorbed before has been completely digested, and then the stick method and the earth martial intent will be improved, and I will leave here first!"

Lin Dong thought that the treasure stick appeared in his hand, and his strength improved, and the stick method needed to be familiar and suitable!

"Drink!"

Lin Dong hit out with a stick, and the sound of breaking the sky sounded, the power of this stick has increased by three or four percent compared with before, if you train more, the power increase should reach fifty percent!

Two days later, Lin Dong, who was sitting cross-legged, opened his eyes, and his eyes flashed.

In two days, Lin Dong's stick method, earth martial intent, etc. have re-adapted, and this breakthrough has increased the strength by fifty percent!