Compared with the importance of the entire Crystal Valley, the fight between Sabrina and Izola was only a tiny wave. However, if used properly, it might cause a horrifying tsunami and even become a key point. Certainly, he also had to try rescuing Kias mother, Freya.

The three Demon Overlords had greatly exceeded his original forecast in front of Christina. The result of war in this world was often determined by the handful of the strongest. If the battle against the strongest couldnt be won, itd be pointless no matter how much reinforcement Catherine sent. Now, two of the three Demon Overlords were out and only the crystal dragon, Jacob was left. Also, Azgalor was likely to see through the puppetry on Fatilu. Therefore, it must be launched before Azgalor returns.

Cutting one finger was better than damaging ten fingers. The most ideal result was to kill the crystal dragon, Jacob and end this base at once. However, since the crystal dragon could become the enemy of Paglio at his peak state, his strength was probably above the other two Demon Overlords. He had to find a way to weaken or make him lose his combat power.

There were too many steps to be considered, and he couldnt take any wrong moves. In the enemys lair, he would lose everything if he took a wrong step. Chen Rui wanted to think about it, but waves of extreme fatigue caused by the training ground came. Sabrina noticed his fatigue, so she didnt make him stay any longer. She let the maid send him back to his place at the Nightmare Valley.

Chen Rui fell into a deep sleep. After waking up the next day, he was energetic and was reminded by his maid, Its time to go to Sir Jacob to learn magic circle.

Every few days, Chen Rui would go to Jacob to learn Dragon Inscription and study magic circles. Although he already held back, his understanding of Dragon Inscription still surprised the crystal dragon, so he began to teach with reservations. Chen Rui knew the crystal dragons thoughts, but he pretended not to know while sneering secretly. Although he could also learn some knowledge from a different angle from Jacob, from the level of understanding on Dragon Inscription alone, he had already surpassed the crystal dragon.

Today was the day of crystal dragons treatment with the magic circle, but he didnt limit Chen Ruis access. The reason was very simple. Chen Rui used the algorithm of [Deep Analysis] and attempted to change the details of a magic circle the last time. It made the recovery speed increase by 1%.

One shouldnt underestimate that 1%. The entire magic circle was composed of ancient runes, Dragon Inscription and ordinary magic circle, interlocking with each other. A small change would cause a chain reaction and even crash the entire magic circle. Chen Ruis ability to increase the speed without compromising the original functions was already a remarkable achievement. Although Jacob was jealous of his talent in magic circle, it was the time to make use of his talent now. Therefore, Jacob naturally provided the greatest convenience.

With the help of [Deep Analysis], Chen Rui had understood this magic circle quite thoroughly. The 1% accelerated recovery was only a small part of his successful analysis. The purpose was to win the trust of the crystal dragon. The subsequent attempts were mainly to understand the secrets of the six ancient runes. Unfortunately, there were still no clues.

The mist from the Spring of Resurrection was like a sauna, making people feel sleepy. Chen Rui suddenly had an idea, Thats it!

Crystal dragons heart was moved, Is there any new discovery?

Chen Rui nodded excitedly, I had an idea initially. Now I finally have some clues. If it succeeds, it can improve the lasting time and recovery effect of the entire magic circle. The time isnt certain, but its definitely not like once every 7 days at present. As for the effect, it was likely to increase by 30% to 50%

The crystal dragon was moved. If it really could achieve the effect that Arthur said, wouldnt my recovery of injury increase exponentially?

When Chen Rui proposed his idea, the crystal dragon, who was also a magic circle expert, was not only jealous, but he was even more admired. According to the idea proposed by Chen Rui, this improvement was definitely possible, but many details had yet to be further tested and confirmed.

Sir Jacob, if this improvement is successful, itll cost a lot of the superior magic crystal, that is, gold crystal or at least blood crystal. In other words, its increasing the consumption of magic crystals to improve recovery efficiency.

There is no problem with the magic crystal. I can recruit manpower for emergency mining and refining now. Ill definitely accumulate the large amount of magic crystals needed at the fastest speed.

Chen Ruis plan made Crystal Dragon very excited. Let alone consuming superior magic crystals. As long as his injury could be healed, it didnt matter if the entire vein was depleted. It seems that my previous plan to win over and make friends with this genius was smart. Once he becomes a grandmaster, Ill control him tightly within my hands to be used only by me.

The injury was the biggest problem that had troubled the crystal dragon for the past 2000 years. As magic and potions werent ineffective on him, he could only use some special methods to recover. After escaping from death in battle, the crystal dragon was still traumatized. To avoid encountering that terrible opponent again, he had been staying mostly indoor and dare not to get too much attention. However, he didnt know that his enemy had also been trapped for 2000 years.

Chen Rui added another sentence happily, It may be used once every three days, and it can be used for the entire day at a time. The [Sleep] inscription that sir taught me last time can also be used to further strengthen the recovery effect.

[Sleep]? Its far less effective than the compound inscription of [Deep Slumber] and [Recovery]. Cough Oh right, you havent learnt that inscription yet. Ill teach you next time. The crystal dragon immediately tried to hide what he exposed, but he didnt know he was being taken into a cage step by step by Chen Rui.

After discussing for a while, the crystal dragon felt even stronger that this plan was highly feasible, so he was very excited. As for the Dragon Inscription, a lot of adjustments needed to be made, so that was definitely his responsibility. Originally, Jacob had been bored in the Crystal Valley. It seemed that he finally found something meaningful to do, so he was full of energy.

As the crystal dragon was overjoyed, he gifted Chen Rui some superior crystal dragons scales and a horn left from his previous metamorphosis, which were all extremely rare alchemy materials. On the way back to the lab, Chen Rui seemed to be in a good mood. Once the improvement of the magic circle was successful and put into practical use, it was time for the final launch.

Upon returning to the lab, Chen Rui entered the Super System. Instead of immediately starting training, he entered the exchange center. In accordance with the principle of consuming the enemy to strengthen himself, these days, he converted a large amount of aura material in the Crystal Valley, which had already exceeded the amount needed to purchase the artifact Thunderous Sound blueprint. Since he could squander, might as well squander now as he might not have the opportunity again. It would be the best to accumulate the 100 million auras needed to promote to the next level Phecda state.

Chen Rui spent 20 million aura in the exchange center and bought the blueprint for Thunderous Sound. The crafting of such treasure cannot be done manually so he had to use the refinerys automatic refining function. After inserting the blueprint and all the materials, the system prompted that itd take 1 hour to complete crafting, and itd consume 100,000 auras. Thank god! Not as bad as I thought! Chen Rui waited patiently for an hour to pass. He finally witnessed the creation of Super Systems first treasure, which was equivalent to an artifact.

Thunderous Sound (Treasure) double lightning magic damage by 20% chance; damage against undead increased by 220%; movement speed increased by 55%; 25% chance to double the damage; 30% chance of additional lightning attack; must recognize owner.

The attribute was slightly different from the one recorded on the blueprint. The lightning magic damage was reduced while several other attributes were improved. It seemed that the blueprint recorded the basic attributes while the specific equipment attributes were randomized.

However, the function of doubling the lightning magic damage was useless for Chen Rui anyway. Chen Rui only knew some earth magic due to the effect of earth elemental heart. He had zero knowledge on air magic. However, the following attributes were quite amazing. Even the seemingly useless damage against undead increased by 220% might show unexpected effects when facing certain types of enemies. He still had a nemesis that was proficient in necromancy.

The Thunderous Sound was a cloud-shaped ornament with a matching red string, which had a style of ancient China. After dripping blood to accept the recognition, Chen Rui tied it around his neck. Suddenly, he had a feeling that they were connected deeply. Other than him, it was just an useless decoration for anyone else who got this Thunderous Sound.

After completing the production of Thunderous Sound, Chen Rui once again entered the training ground. His Dark Star Territory was just at the initial stage whether in terms of his understanding or strength. Manus remaining strengthening power hadnt been fully absorbed into his own use, so he had to continue training.

The training that went on for hundreds of days was extremely boring. Sometimes that loneliness could drive people crazy. However, he had to persist. Only those who could withstand what others couldnt, would be able to do what others couldnt.

In the blink of an eye, three days passed and Sabrinas rival, Izola, finally arrived at the Crystal Valley.

Izola was a Mammon Royal Family. She had long blue hair, and there was no veil on her face. To be extremely fair, she was slightly inferior in terms of look as compared to Sabrina. She was very tall. She was about 1.8 meter. She looked arrogant and her cheekbones were a little high. There were some murderous intentions at the corner of her eyes, and her temperament were quite similar to a royal sister.

Chen Rui finally met Kias mother Freya. Freyas eyes were a bit similar to Kia. Although she wasnt as beautiful as Kia, she had a pitiful look that made people pity and give her mercy.

This time, Izola not only brought back Freya but also a group of people. One of the two leaders was Chen Ruis acquaintance, Horford, a dual-specialized master who lost in the mechanic contest: the other was a dark elf. Many of the group were wearing mechanic robes.

Chen Rui couldnt help but wonder. Im the best potential in the Demon Realm to become a grandmaster. No matter which force Im placed in, Ill 100% be recruited. Horford is a dual-specialized master, and he is probably the disciple of the Demon Realms top mechanic master, Nate, so it was understandable that he is recruited by the Crystal Valley. Then, why are these mechanics here?

Chen Rui suddenly thought that Sabrina once said that Izola robbed an important matter she was responsible for and won the trust of Azgalor. Is it related to this mechanic?

When he was thinking about it, Horford saw Chen Rui, stopped and a strong hostility emerged from his surprised eyes.

Izola discovered Horfords anomaly and saw him staring at a stranger in Crystal Valley like he was looking at an enemy. She frowned and asked, Master, is that your nemesis?

Horford shook his head while his eyes were still fixed on Chen Rui, He isnt really my nemesis, but he should be my rival.

Since he is your rival, Ill help you get rid of him! Izola stepped forward and a black halo appeared in her hand.

Race: Greed Royal Family. Comprehensive Strength Assessment: B+ Physique: B Strength: B Spirit: B+ Agility: B+

It seemed that Izola emphasized heavily on magic training. She didnt bother who was right and wrong and immediately went for the kill. She was indeed sinister, and she was indeed Sabrinas rival.

The black halo flew to his front instantly with a terrible destructive breath.

How to train your crystal dragon ?