It was still Ling Xiao who took the lead, Ling Yu'er and Ye Xinmei followed, Ling Weiyuan was the last, everyone passed through the cave entrance, entered the dark river, and under the leadership of Ling Xiao, they went towards the cave where the spiritual energy gushed.

Ling Xiao had always been very vigilant, he didn't know if there would be any monsters in the underground dark river when the heavens and the earth were changing, especially prehistoric monsters and the like, so his divine thoughts kept scanning the surroundings, but fortunately, nothing happened.

"...... Uproar"

Soon, Ling Xiao led everyone out of the Dark River, and immediately felt a dense and extreme aura spreading around, and when they left the Dark River and came to the cave, Ling Xiao found that the cracks in the ground had expanded several times, and a large number of rocks had fallen from the top of the cave, almost filling the ground of the cave.

He immediately ran to the cave wall on the side, and then breathed a sigh of relief, and found that the Peiyuan fruit tree was actually intact, and the more than a dozen fruits on it had become a little redder.

At this time, the concentration of aura in the cave was already five or six times that of the outside world, but it continued to increase rapidly, and Ling Xiao searched along the edge of the crack, and finally found an extremely rich aura in one place, which had turned into a milky white stone the size of a soybean.

"Hahaha, this should be the spirit stone, it is really made of spiritual energy, and the spiritual energy contained in it is enough for a martial arts master to upgrade to a level. Ling Xiao was overjoyed, and immediately put it away with his divine thoughts, and he found that the aura in the spirit stone could only be refined and used by a martial arts master.

Spirit stones can not only be used for cultivation, but also can be used to replenish aura consumption, so if a martial arts master has spirit stones on his body, then his aura can be replenished at any time, and his combat power will be very terrifying.

Ling Xiao suddenly had a realization in his heart, I am afraid that after the change of heaven and earth, the spirit stone is the most valuable cultivation resource, he thought that in some Xianxia novels, some caves and blessed lands have spiritual veins, and there are various grades of spiritual stones in the spiritual veins, I don't know if such spiritual veins will also be formed after the changes in heaven and earth.

Afterwards, he searched carefully, and found a total of three spirit stones the size of soybeans in the cracks of the entire cave, and put them away with joy, which would be of great effect on his next cultivation.

"Brother Xiao, there is such a strong aura of heaven and earth here, I estimate that after practicing here for a few days, I can break through to the fourth-level martial artist. Ling Yu'er exclaimed.

"Yes, your father and I should be able to break through to the sixth level martial artist this time. Ye Xinmei also said in surprise.

"Then let's hurry up and practice, but I'm afraid there is no mobile phone signal here, I don't know if the old man will be crazy looking for us?" Ling Xiao himself was about to break through to the second-level Martial Sect, so he said to everyone with a smile, and then he was a little worried.

"Don't worry, I already sent a message to your uncle before I came in, saying that we are going into the mountains for a few days, and there may be no signal. In two days, you can take some time to go out and send them a message to say that they are safe. Ling Weiyuan had already thought of this.

Afterwards, the group of four people practiced among the rocks, and sure enough, the speed of cultivation was far faster than usual, and even Ling Xiao's speed of condensing the spiritual liquid had also accelerated a lot, and it was estimated that one day was enough to condense the second drop of spiritual liquid.

At night, the aura of the cave ** tried to stabilize more than twenty times in the outside world, and then it no longer increased, and some aura was spreading outward along the cracks in various places underground, and by noon the next day, the aura of heaven and earth in the entire Qixingyan Scenic Area had increased a lot.

For ordinary people, they just feel that the air quality has improved, and some people with minor problems have all improved in a few days, and the people living in this area have strengthened their physique.

And if a martial artist appears in this area, he will find that the concentration of heaven and earth aura has increased several times, although they don't know what the reason is, but they will not give up the opportunity to practice.

It's just that ordinary martial artists won't think about why the aura of heaven and earth has changed, let alone know more about the great changes in heaven and earth, and no one will explore the source of the aura gushing.

In the underground cave, Ling Xiao sat quietly, in his sea of qi, the second drop of spiritual liquid was rapidly condensing, carrying out the final solidification, and after the huge heaven and earth spiritual qi poured out from the crack in the ground, it was directly sucked by him quickly.

Fortunately, the underground cave was large enough, so the places where the four of them practiced were far apart, among them, Ling Weiyuan and his wife were close to Ling Yu'er, and Ling Xiao was far away from them and sat on the edge of the crack.

"Buzz ......"

In the afternoon of the next day, Ling Xiao's sea of qi suddenly vibrate, and then there was a buzz, and the second drop of spiritual liquid instantly solidified, turning into a drop of water the size of a little finger, juxtaposed with the previous drop of spiritual liquid.

Ling Xiao didn't know that the spiritual fluid of an ordinary Martial Sect powerhouse was only the size of a real water droplet, while his spiritual fluid was two to three times the size of an ordinary Martial Sect, which meant that the amount of spiritual energy in his Qi Sea would also be about two to three times that of the same rank.

And at the moment when the second drop of spiritual liquid was formed, the surrounding spiritual energy poured in wildly, gradually forming a vague spiritual energy vortex in the sea of qi, as long as Ling Xiao continued to cultivate, this spiritual energy vortex would eventually form a third drop of spiritual liquid.

However, Ling Xiao knew that cultivation should not be excessive, and if he wanted to be fast, he would not be able to reach it, so after he felt some swelling pain in his meridians, he immediately stopped practicing and began to practice a martial technique that he had just comprehended.

The Nine Heavens Wind and Thunder Technique is the strongest technique created by Zhao Fenglei, the strongest man in the world twenty years later, so when he is in the realm of the Martial Sect, he has a martial art, a martial art that does not need to be practiced from scratch.

When Ling Xiao broke through to the second-level martial arts, he suddenly comprehended the martial art of Wind Thunder Step, and it was a light martial art, focusing on improving speed, especially the speed of movement.

The difference between martial arts and general martial arts is that martial arts do not need to be practiced from the basics, as long as the comprehension of the exercises is sufficient, they can even directly reach the level of Dacheng or even consummation.

And the general martial arts need to be practiced from scratch, and they need to be improved one level at a time from small to medium to medium, and then to consummation, just like the basic martial arts that Ling Xiao is progressing towards consummation.

However, the martial arts have a natural advantage, that is, it is related to the comprehension of the exercises, so Ling Xiao has just comprehended the wind and thunder step, and he is already a middle-level martial art.

Ling Xiao experimented with the wind and thunder step in the corner of the cave, and found that every step he took out would actually have a faint sound of wind and thunder on the soles of his feet, and then he could instantly appear five meters away, and this was only the middle level.

Ling Xiao was overjoyed, and immediately concentrated on comprehending the wind and thunder steps, imagining the scene of the wind and thunder erupting, and gradually immersed himself in the comprehension.