Zhang Yu was shocked when he heard Ouyang Mu's words, he raised his head and looked at Ouyang Mu and said, "Oh? There will be a spirit stone vein here?" Then why do you agree to abolish the Black Castle?"

"Our Ouyang family has been learning mathematics for hundreds of years, but we lack a path to growth, so I hope that if I have the opportunity, we can strengthen the Ouyang family. Ouyang Mu did not answer Zhang Yu's question, but said something inconsequential.

Zhang Yu frowned, he had never eaten a pig and had seen a pig run, he looked up at Ouyang Mu's respectful appearance, and couldn't help but move in his heart.

"I learned a method called soul control technique, in order to make people loyal to the controller...... Zhang Yu said after a moment of silence, he knew that Ouyang Mu was a good person, smart and good at doing things, and it would be best if he took it for himself.

The spirit stone vein is not trivial, if it is known by the sect, there will be nothing for him, and he has to be careful.

"Oh?" Ouyang Mu was stunned, the scene seemed silent, Ouyang Mu's face changed, being controlled by others was not a joke, it was completely controlled by others.

Ouyang Mu was very disgusted at first, and just wanted to refuse, but suddenly remembered that his master had said that if he could escape this catastrophe, then his blessing source would ascend to the sky in one step.

As if he had made an important decision, he stood up, bowed to Zhang Yu, and then knelt in front of Zhang Yu and closed his eyes. Zhang Yu couldn't help but be stunned, and instantly understood what Ouyang Mu meant, is this to take refuge in himself?

He didn't hesitate, pinched the trick in his hand, drew a light blue rune in mid-air, and gently pushed it to Ouyang Mu's eyebrows, this kind of spell must be done willingly by both parties, to Zhang Yu's surprise, the soul control technique was used very smoothly, and when the flame appeared in Ouyang Mu's eyebrows, a little of his soul also disappeared in Zhang Yu's eyebrows.

"Meet the master!" Ouyang Mu bowed his head and said respectfully.

Now that he has this guarantee, Zhang Yu no longer conceals it, he told the spirit stone mine cave and how he came here, Ouyang Mu couldn't help but be overjoyed after hearing this, he couldn't imagine that he really bet on the treasure this time, you must know that this spirit stone vein is enough to support the expenses of a sect.

Zhang Yu's experience surprised him even more, he was convinced of the prophecy of the Six Dao Immortals, you must know that if according to the prophecy, the Holy Dao Heavenly Master unified the Three Realms, then their Ouyang family would be from the dragon's skill.

"I'm worried that the Lingshi Mine won't be able to be mined and transported out after it is mined. Zhang Yu said the doubts in his heart.

"Leave this matter to me, I will handle it, why don't we go and see the spirit stone vein?" I know a little bit about ore surveying...... Ouyang Mu said with a smile, with an expression of wisdom bead in his hand.

Unexpectedly, Ouyang Mu understood this, he was stunned and nodded. Black Castle is now in charge of Ouyang Mu, and he casually found a reason to leave Black Castle with Zhang Yu.

The two figures are running wildly in the underground world, due to the last attack of the ghost mother, which caused a large number of casualties of underground creatures, it is estimated that there will be no danger in this area for a long time.

Zhang Yu didn't even see a mouse along the way, and soon they were close to the spirit stone vein.

"Isn't this the lair of the demon monitor lizard, it turns out that the ore vein is here......" Ouyang Mu looked at this place in surprise, and couldn't help but say with emotion, you must know that the Dan Dao Sect has explored almost the entire underground, but it just didn't go to the demon monitor lizard's lair to take a look.

One is that the terrain here is complicated, and there are too many creatures underground, so maybe a team will come in and suffer heavy losses before they encounter a demon monitor lizard. The second is that the demon monitor lizard is particularly difficult to deal with, and it takes a lot of manpower to kill the demon monitor lizard, and the combination of the two reasons makes this an unknown area.

The terrain of the demon monitor lizard's lair is very peculiar, it is also hollow underground, surrounded by basins, and there is no top in sight upwards. As soon as they came to the periphery of the lair, before they could walk in, the two suddenly heard a whistling sound and hurriedly dodged. I saw a crossbow bolt stuck in the ground, and its tail was still trembling and buzzing.

"Stupid, didn't you see that it's the boss?" Just when Zhang Yu was just switching battle states, he heard a person shouting loudly, and then several people flew out, and when he saw Qiu Chengfeng appear, Ouyang Mu showed a clear expression.

The person who came was Qiu Chengfeng, he and Zhou Fat'er took the prisoners to find the spirit stone vein, they were excited to death, and several prisoners were carried away by desire, wanting to snatch and occupy the ore vein, but they were directly killed by Qiu Chengfeng, and explained that this ore vein belonged to it, and suppressed everyone.

Seeing that everyone had yielded, Qiu Chengfeng breathed a sigh of relief and immediately arranged for on-the-spot defense to prevent the cultivators of the Dan Dao Sect from looking for them.

No, when he came to inspect the defense today, he met Zhang Yu, Qiu Chengfeng ran over, and when he saw Ouyang Mu, he couldn't help but be surprised, but he couldn't help but breathe a sigh of relief when he saw the fire mark deliberately exposed at the center of Ouyang Mu's eyebrows.

"Master, please come here!" Qiu Chengfeng said respectfully.

"How's it going?"

"The basic cover and defense functions have been built, but the materials are extremely scarce, and many defensive measures cannot be built, if the Dan Dao Sect sends people, I am afraid that it will not be able to resist ......" Qiu Chengfeng said worriedly.

"Don't worry, the sect has decided to withdraw the Black Fort and shrink its defenses. Ouyang Mu next to him said with a smile.

"Really, that's great!" Qiu Chengfeng looked at Zhang Yu when he heard this, and couldn't help but get excited when he saw him nodding.

"Then the only problem now is how to mine the spirit stones and transport them out in exchange for the necessary materials...... Qiu Chengfeng said with a frown.

"I saw a message in a manuscript that said that there is a dark river in the spiritual stone vein, and you can cross the dark river to reach Qiushui Lake smoothly......"

"Really?" Qiu Chengfeng's eyes lit up.

Qiushui Lake is embedded in the mountains of the four major sects, although Qiushui Lake is an ordinary freshwater lake, if it leads from the underground, it will not be developed.

"Of course it's true, but I need a lot of people! After all, the route of the manuscript is not very clear. Ouyang Mu said directly.

"Human?" Qiu Chengfeng's expression became a little strange.

"What's going on?" Zhang Yu asked strangely, hesitated for a moment before Qiu Chengfeng said the matter.

It turned out that the composition of the group of prisoners was different, in the past, under the high pressure in the prison, everyone was still obedient, and the strong were respected, until they got out of the prison, some people didn't want to stay here, wanted to leave. Leaving now will inevitably spread the matter of the spirit stone vein, so you have to find a way.

Qiu Chengfeng's words were full of blood, according to his meaning, he would kill all these people, but after killing, the original human resources would be reduced, and he was now pressed by his personal prestige, and he might run away as a few days long.

"This ......" Zhang Yu frowned, this is indeed a difficult problem.

"What's so hard about this, as long as you control them all. Ouyang Mu said with a smile, pointing his finger at the center of his eyebrows, and the two of them understood in seconds.

This is indeed a way, and 100% loyalty must be guaranteed at present, Zhang Yu nodded in approval of Ouyang Mu's suggestion.

"But this is still understaffed, I ask that the children of the Ouyang family also become the master's subordinates. Ouyang Mu then said.

Zhang Yu was stunned, quickly figured out the key and nodded, and the future team was established in this way.

Qiu Chengfeng and Zhang Yu acted in a play, one was white-faced and the other was red-faced, so they handled the manpower matter well.

But Zhang Yu was still unwilling, and from various sources, he was the only one left in the Heavenly Master Clan? How could he fight against the people of the Ghost Domain? He told Ouyang Mu about this doubt, because Ouyang Mu wanted to go back to the sect to recruit reliable disciples of the Ouyang family to expand the manpower.

"Don't worry, master, I'll inquire on your behalf. Ouyang Mu nodded and said.