When he came to the lobby, Wu Ziqing was sitting on a chair of the Grand Master, and when he saw Lu Chen walk in, he hurriedly greeted him with a smile: "As expected, my brother, that knife is indeed made by Longshan City."

Now his attitude towards Lu Chen can be described as "intimacy".

Originally, as an elder of his faction, he naturally looked down on young people like Lu Chen, but Lu Chen's performance was calm and tolerant, and his conversation was calm. He looked like an ordinary young man, and he was really a master.

Coupled with Lu Chen's performance in killing Hu Gang, and his precise reasoning and judgment, Wu Ziqing felt that this person's future achievements must be limitless.

Since he is a future master, in his capacity, he does not dare to offend.

Lu Chen smiled and said, "Can you find out any clues?" He was not surprised that the knife was refined in Longshan City. After all, there is only one big city in Longshan City, which can refine high-quality spiritual tools. Master, you definitely won't stay in a small town, and you can only choose to refine it in Longshan City nearby.

"A clue, I still want to invite my brother and I to come over in person, do you have time?" Wu Ziqing asked.

Lu Chen nodded, Wu Ziqing gave face like this, of course he would not refuse the request of the other party at will.

The two walked out of the World Business Alliance and walked along the bustling street to a weapons shop.

There was the sound of forging iron inside, and an overwhelming heat emanated from the shop, and it was obvious that magic tools were being refined inside.

Lu Chen, Wu Ziqing, and Su Xuan walked in.

A burly man with a naked upper body was forging iron, and beside him was a middle-aged man in his forties who was using profound energy to control the fire.

The three of them didn't speak, and quietly watched the two of them refining the magic weapon. After half an hour, a spirit sword was released, which was a medium-quality spirit tool.

"It turns out that it was Elder Wu Ziqing who came here. It's really full of brilliance. What does Elder Wu do?" The middle-aged man smiled and put down his spirit sword, and asked the three of them to sit down.

Wu Ziqing's status in Longshan City is not low. He is a famous person, so they are familiar with each other. He smiled and said, "Master Tan, I heard that you made this thick-backed sword yourself, right?"

Wu Ziqing said and took out a thick-backed knife.

The middle-aged man said, "It was indeed made by me. Your subordinates have come to ask me before."

Wu Ziqing said: "I want to ask you one thing. I wonder if Master Tan remembers what the person who made the weapon looked like? Is there anything special about it?"

The middle-aged man thought back for a moment and said, "I remember that the person who came here to refine this thick-backed sword was a young man with a very fierce appearance. He came here once before, and it's the second time. It took me half a month to make this thick-backed knife, so I am still very impressed."

Wu Ziqing's expression changed, and he said, "If that person comes again next time, please notify me immediately. I am very grateful." Although I don't know when the other person will come back here to refine weapons, as long as there is a possible clue, Wu Ziqing is already very grateful. Satisfied.

The middle-aged man said with a smile: "Elder Wu came to tell me this matter in person, it's not a trivial matter, it must be followed."

Wu Ziqing said a few words of thanks, and was about to leave, but Lu Chen suddenly said: "The material for this thick-backed knife is not bad, it seems that it is not owned by the shop."

Lu Chen has been observing the entire weapon spectrum, and found that there are only two or three high-grade spiritual weapons in this weapon spectrum, all of which belong to the level of the treasure of the town shop, and in terms of quality, they cannot be compared with the thick-backed sword.

To know whether a master craftsman can make a good magic weapon, there are many conditions. First, the craftsmanship, the second, the cultivation skill, and the third, the crafting materials. These three conditions are indispensable. Just now, when Lu Chen observed the refining strength of this "Master Tan", it really doesn't matter. I am afraid that he can only train a medium-grade spiritual weapon. The best refining materials are not available.

Most importantly, Lu Chen found that this thick-backed knife was doped with some rare refining materials, called "Earth Fire Fine Gold". Although this material was very rare, for the entire spiritual tool, The quality has been greatly improved.

When the middle-aged man heard Lu Chen's words, his face was slightly surprised, and he said, "Can you see the refining material of this thick-backed knife?" He thought that Lu Chen was Wu Ziqing's son and nephew, but now it doesn't seem to be the case. .

Lu Chen smiled and said, "Master Tan doesn't need to ask me how I found out the material used for this knife, I just want to ask, is this knife doped with earth fire fine gold?"

"Earth Fire Fine Gold?" The middle-aged man shook his head blankly, "What material is that?"

Lu Chen frowned. The other party had never heard of ground fire fine gold, but he was right. Ground fire fine gold is the best material for refining tools. It can be used to refine immortal weapons. In this case, it is indeed difficult to see this material.

Lu Chen could see that there was a very small amount of ground fire fine gold in the thick-backed knife, but because the amount was too small, it was of little significance to extract it. If one could find a ground fire based on this trace of ground fire fine gold material Pure gold mines, that is the real fortune.

"So, what materials did you use when you built this knife?" Lu Chen asked.

The middle-aged man replied: "The main materials are thousand-year-old black iron, red copper, ice stone, and hot soil."

"What is hot soil?" Lu Chen asked.

The first three materials are very common refining materials, but he has never heard of Hot Earth.

Since Lu Chen has read the secret books and geography in the Xuanwutang Classics Pavilion for four months, it can be said that he has a good understanding of this world, but he has never heard of such things as hot earth.

The middle-aged man smiled and said: "It seems that the little brother is also interested in refining tools, but well, hot soil is indeed a special product near our Longshan City, and it is no wonder you haven't heard of it. Now those hot soil mines are controlled by Taiyuan Sect. It's not easy for ordinary people to get this kind of hot land."

Then he gave a detailed explanation of this so-called "hot land".

It turns out that this kind of hot soil has been discovered in the nearby mountains. This soil is intuitively named "hot soil" because the temperature is higher than that of ordinary soil and rocks.

The five elements of metal, wood, water, fire, soil and five elements fill the world and are omnipresent, so it is not uncommon for the soil to contain fire.

When Lu Chen heard this, he realized that these people regarded the ore containing the earth fire fine gold as hot soil.

Earth Fire Gold is the purest metal that contains the fire attribute between heaven and earth. It is used to cultivate fire attribute exercises. It is almost ten thousand times stronger than top-grade fire herbs. Forging fire spirit tools is far better than Other metals are much stronger.

Real gold is not afraid of fire, only the element of pure gold can contain the energy of separation from fire. Any other metal will slowly melt under the pure energy of separation from fire.

After countless thousands of years, the pure gold will gradually turn into the ground fire pure gold under the action of the Qi from the fire.

Of course, this requires a very special geographical environment.

And near Longshan City, there are just such conditions, probably because of the proximity to the Dead Sea Desert, this rare environment has been formed.

However, according to Lu Chen's judgment, the content of ground fire fine gold contained in this hot soil may be very low. If you want to slowly extract the fine gold element, it will be a huge project, even if Lu Chen discovers such a mine The hole, with his current ability, is also difficult to refine.

"You said that Taiyuanzong controlled the hot soil mine?" Lu Chen remembered the "Hunyuan-qi formation" used by Hu Gang's bandits. Now it seems that it is probably related to Taiyuanzong.

The Taiyuan Sect is located three hundred miles away. It seems that the Hunyuan Qi formation can only come from the Taiyuan Sect, and it is difficult to explain other than that.

In other words, this group of bandits may have something to do with Taiyuanzong.

"Master Tan" nodded and said, "Yes, the Taiyuan Sect has completely occupied the hot soil mine, and we have nothing to do. In the face of such a large sect, who would dare to say no?"

Lu Chen nodded. By now, he could almost identify the clue.

After leaving the weapon shop, Lu Chen told Wu Ziqing his speculation.

After Wu Ziqing heard this, his expression changed slightly, and he said, "You mean, someone from the Taiyuan Sect instructed that gang of thieves to do this kind of murder and treasure hunt?"

"Maybe it's just some scum from the Taiyuan Sect." Lu Chen said.

As the right way of the profound sect, Taiyuan Sect, even if it wants to do bad things, it will definitely not be known. It is easy to give people a handle on occupying hot soil mines. The senior officials of Taiyuan Sect should not do this. Or the elders are doing something wrong. Driven by their interests, these people naturally don't care about the rules.

With the status of Taiyuan Sect disciples, these people act unscrupulously.

"Hey, Taiyuanzong is amazing? Are we all afraid of them in the world's business alliances?" Wu Ziqing said suddenly, "Taiyuanzong instructed the bandits to take away our important items, this must be taken back, and the commander has given an order. "

Lu Chen said with a smile: "Elder Wu, Taiyuan Sect is nearby after all, it is a real snake here, not to mention that Taiyuan Sect is probably not a snake, it can be regarded as a dragon. As for the world business alliance, its strength is certainly not under Taiyuan Sect. But your helm is thousands of miles away, and you can't quench your thirst from far away, no matter how strong your strength is, on the Taiyuan Sect's territory, I'm afraid you won't be able to do anything."

Wu Ziqing thought for a moment, then said helplessly: "What my brother said is very true." He also had to admit that Lu Chen's words made sense.

Now, after all, the World Business Alliance has not obtained conclusive evidence of Taiyuanzong's collusion with bandits, and it is obviously a stupid act to rashly tear up with Taiyuanzong.

Wu Ziqing thought for a while, then said: "Brother, our World Business Alliance has already invited a lot of people to arrest Hu Gang, but unfortunately those people are all rubbish, so I can only ask my brother to help investigate, if we can find out the situation, World Business Alliance There must be a heavy reward."

Lu Chen smiled and said, "Elder Wu, you only asked me to search people, but no one can figure out who they are, and what exactly is missing from your business alliance didn't tell me, how can I help you find the lost things?"

Wu Ziqing hesitated for a moment, then finally sighed and said, "If it really falls into the hands of Taiyuan Sect, I'm afraid this lost thing will be difficult to retrieve. Let's not hide it from my brother, what our world business alliance has lost is a space magic weapon. The space-time disk, an important item that opens the door of space."