Zhang Hongyu frowned and thought for a while, and briefly explained the process of digging the mine under the heavens, he had just touched the two captains of No. 1 and No. 2, and the conditions of the two mines were also said.

"As for this spiritual treasure, I still have to hand it over to the mansion master to deal with, he must not have noticed that there was still a spiritual treasure hidden in it when he gave me the exercises. Zhang Hongyu summoned the golden little sword.

Gongsun Li and the others looked at each other and said with a smile: "So that's the case, since this Lingbao is destined for you, you don't have to give it a halberd, not to mention that Lingbao chooses someone to recognize the Lord, and you can't run away if it's yours, when the time comes, you just talk to him, and take it first." ”

Although Gongsun Li was smiling on the surface, he secretly complained frantically, the people around Liu Zhiji either got the spirit treasure or the heaven-level exercises, and the power was also rumored to have a super spirit vein, Gongsun Li always thought about when he would have a chance.

Zhang Hongyu got the spirit treasure and Zichen Fu got the spirit core, although these two things are worth celebrating, but the crisis of Zichen Mansion is not less at all, the young man in Tsing Yi analyzed: " I just heard the screams of the two worshippers say that there is a demon beast in the underground realm, and we are now facing more problems, one is the problem of the demon beast in the realm, it is not a good thing for us whether this demon beast dies or not, this demon beast is either a subordinate of the Heaven Swallowing Rat Emperor or has a lot to do with the Heaven Swallowing Rat Emperor, if he dies, the Sky Swallowing Rat Emperor is bound to be angry, it would be bad if he was crazy to find us for revenge, but it is not ruled out that he will throw a rat bogey, and dare not trouble us. ”

Gongsun Li and the others nodded, there was also a transformation realm demon beast underground that they didn't expect, fortunately, this demon beast was discovered in advance, otherwise this spirit core might not be their turn.

"The second is that it is not a force with the Heaven Swallowing Rat Emperor, or it is not dead, if I am the Heaven Swallowing Rat Emperor, I will definitely send the Rat Clan to test the strength of Zichen Mansion, or some small-scale retaliation, this is what we should pay attention to, the Sky Swallowing Rat Emperor will definitely not give up, at least send the Rat Demon to retaliate." ”

What the young man in Tsing Yi said was very reasonable, and everyone also agreed that Zichen Mansion had entered a state of first-level combat readiness, except for the garrison brigade guarding the city, all the teams outside the city had to withdraw to the city to prepare for war.

This matter was also passed on to Fu Bo and Gu Lianqi by Bing Ning'er, and after the two knew the seriousness of the matter, they immediately sent people to respond, and Gongsun Yan took it personally, and took the newly formed formation of Congyun Houfu to lay down a formation in the Lingshi Valley, and the Heaven Digging and Tiangong Hall also cooperated.

Gongsun Li's meaning, if you want to prevent the counterattack of the demon beasts, you must arrange the formation under the Spirit Stone Valley, and the main battlefield cannot be in the Spirit Stone Valley.

At this time, on the ground floor of Lingshi Valley, a hole had been dug out of the Digging Heaven, and when Gu Chengdu was reinforcing it with his members of the Tiangong Hall, the old man Zhu of the Divine Craftsman Hall ran over.

"Hall Master Gu, I have a suggestion. The old man Zhu touched his chin and beard, wandering around this space, he looked at the head with only a few black iron pillars on it, and immediately shook his head.

"You dig like this, what if there's a battle down there and all these pillars come down?"

Gu Chengdu saw that the old man Zhu wanted to drive him away directly, but after thinking about it, this old man must have paid attention to it, so he said: "Don't sell the lawsuit, old man, if you have any ideas, say quickly!"

Zhu the old man laughed "hehe", stretched out two dry hands and rubbed them in front of Gu Chengdu and said, "Gu family's hundred flowers wine, I can ...... it"

"Don't think about it!"

Before the old man Zhu finished speaking, Gu Chengdu glared at the old man Zhu and shrunk his neck, "Do you think my Baihua wine is easy to brew? ”

Zhu Old Man suddenly showed a disappointed expression, "Forget it, don't blame me for not reminding you when the pillar collapses, the fate of the entire Lingshi Valley is in your hands, and you don't even want the lives of your brothers for a few bottles of Baihua wine, alas!"

Zhu Old Man sighed and walked towards the ladder to the sky, Gu Chengdu hurriedly stopped him, "Old man, don't threaten me, this bottle of Baihua wine is for the sake of you to build a lot of utensils for my Tiangongtang, hurry up and tell me what to do so that I don't need a pillar." ”

Old man Zhu glanced at him, "If you really use this method and need our Divine Craftsman Hall to cooperate, one bottle is not enough, at least three bottles." ”

"You!" Gu Chengcheng's fingers trembled and pointed at Old Man Zhu, his nose crooked.

"Okay, you tell me how to do it first, if you pay attention, what about giving you three bottles?" Gu Chengdu also let go, the main problem of this pillar Zhang Hongyu also told him, usually digging heaven does not encounter this kind of thing, they generally adopt this kind of pillar method, but their mine road is not as wide as the underground layer of Lingshi Valley, and the danger is relatively low.

"Hmm. Old man Zhu nodded, paced to an iron pillar, he knocked on the black iron pillar with his hand, and the hollow sound inside made him shake his head.

"How much force does it take to break this dark iron pillar?" asked the old man Xiang Gu Chengdu.

"Me?" Gu Cheng pointed to himself and said: "Sancheng force, the main thing is that this dark iron pillar has not been forged well, and it can be broken in Sanchengli."

Old man Zhu groaned, took out a silver metal rod from the storage ring and handed it to Gu Chengdu. "How hard can you break this one?"

Gu Chengdu was stunned, "Are you kidding? With such a thin stick, I can break him without any effort." As he spoke, Gu Chengcheng's hand moved slightly, and the metal rod bent in response.

"Huh?" Gu Chengdu picked up the bent metal rod in confusion and said to Old Man Zhu: "This is Xuantie, why is it so ......?"

"Tenacity, huh?" said the old man with a smug smile.

"How did you do that?" Gu Chengdu tried to twist the metal rod a few more times, and he twisted it three times before he completely broke the metal rod in half.

Gu Chengdu put the section of the metal rod to his eyes and looked at it, and let out his true qi to feel it carefully, and found that this metal rod contained not only dark iron, but also some red hematite in it, in addition to the black black black iron.

"What is this?" Gu Cheng twisted a black particle on his hand with his fingernails, twisted it with his fingers and found that this thing was not as hard as he imagined, but as soft as soft clay.

"This is a magnetite, how did these boys still have such a large magnetite in it, no wonder you broke it so easily. Zhu Old Man snatched the metal rod and saw that except for this magnetite, which was relatively large, the rest were smoothly integrated into the metal rod, so he suppressed his anger.

"This ...... What's the matter with metal? You don't want to use this metal as a pillar, do you? It's much tougher than pure darkiron, but ...... You can't bear it, right?" Gu Chengdu said with some uncertainty.

Gu Chengdu admitted that he had never heard of this kind of metal, according to what Old Man Zhu said, this metal seemed to be a fusion of many ores, although he had also heard of rumors of this synthetic metal, but it was the first time he had really seen it.

"When a pillar, isn't it good to inlay him directly under the Spirit Stone Valley? The resistance of this metal is definitely passable, it is much more stable than putting a pillar underneath, and besides, it is not impossible to put a few more pillars in this metal.

After hearing the old man's thoughts, Gu Chengdu suddenly fell into deep thought, if what the old man said was true, there would be more places where this kind of metal could be used, whether it was the city wall or the dungeon in the future, this kind of ore could be used completely.

"Is the storage enough?" Gu Chengdu asked one of the most important questions.

"Enough?" Zhu sneered, "After you finish mining, you will pile up the ore in the warehouse of our Divine Craftsman Hall without looking at it, and the current storage capacity is enough to build two Spirit Stone Valleys." ”

Gu Chengdu was completely surprised, "Let's go, I'll take you to get wine! What are you still doing here?" Go to the Divine Craftsman Hall and move ore for me!"

"Remember to move the No. 2 warehouse! Only that warehouse is ready-made!" Zhu the old man was strangled by Gu Chengdu's neck and the tendons were up, but he didn't care about it, he was about to drink Baihua Brew, so what could Gu Chengdu do if he strangled it for a while.

The construction of the basement layer is still continuing, but the team guarding the mine below was attacked by a group of sudden demon beasts, these demon beasts are all rat demons, and the cultivation is above the innate rat demon, under their lifeless attack, the initial point of the fortification was quickly broken, fortunately Zhang Juzheng was present to block them back into the mine, otherwise it would be an absolute disaster for Zichen Mansion to let them rush to the ground.

"What? There's a white rat who wants to see me locked up by you? Why didn't you say it earlier?" The boy in Tsing Yi was busy with the sudden attack of the demon rat, when a deputy captain of the special operations team suddenly found him.

"Childe...... We thought it was a monster, so we thought about keeping it for a few days. The captain muttered.

"Did you give it the scroll? Forget it, guess you didn't. The boy in Tsing Yi didn't bother to pay attention to this group of brainless people, he was now wondering if it was time to replace all the members of the special task force, this group of people only had strength and no brains, and they couldn't do anything given to them, and they couldn't be used.

The boy in Tsing Yi didn't expect that his idea was directly realized for him after Liu Zhiji came back, because when Liu Zhiji left, Zhang Juzheng and others had not brought anyone to vote, this special task force was also temporarily decided by Fu Bo, and when Liu Zhiji came back, Zhang Juzheng and others were transferred away without saying a word, of course, now Liu Zhiji is still in the Ink God Spirit Domain, if he is there, he will definitely not let Zhang Juzheng lead the team.

Strength is important, but no brain is more terrifying than low strength, this time because of Zhang Juzheng's negligence, the underground rat demon rioted because of the white night, so that Zichen Mansion lost a lot of good hands.