"Your Excellency, you're back!" Lu Long and the others shouted loudly with ecstatic expressions, and their hearts that had been hanging were finally let go.

Li Yunfei smiled slightly and said, "Nonsense, I won't come, do I still live inside." ”

At this time, he had already found out the situation in the entire Flame Township, knew that the fire demon crystal veins here had been completely mined, and he had already made a decision in his heart.

The most important mineral in the Flame Township, the Fire Demon Crystal, is now completely out of source, but even so, it does not mean that the Flame Township has no value.

First of all, the place where Flame Township is located is the frontier of the Giant Territory, and it has been extremely deep into the Giant Territory, so it can be said to be an extremely valuable frontier position for human beings, so it cannot be abandoned here, and a certain number of garrisons must be maintained.

Secondly, although the Fire Demon Crystal in the Flame Township is gone, minerals such as iron essence and sulfur here are still extremely important to Falling Snow City.

Not to mention anything else, sulfur alone is indispensable for the casting of various metals in Falling Snow City.

Thinking of this, he immediately ordered that the remaining personnel in Flame Township be halved again, leaving three hundred people stationed to only carry out the collection and excavation of iron essence and sulfur ore. At the same time, the original rotation once a month has been changed to a weekly rotation.

After hearing this decision, these miners in Flame Township were naturally overjoyed, after all, no one wanted to live in this dark underground for a long time.

After making these arrangements, Li Yunfei immediately got on a semi-submersible boat and headed towards Falling Snow City again.

Although this trip to the Flame Country found the ancient magic circle that had existed for an unknown amount of time, and found the entrance to the ruins of that plane, it can be said that the harvest was huge, but these gains were things that could only be used in the future, and they were of no use to him now. In particular, the problem of the magic crystal vein, which is an urgent need, is still not solved.

Therefore, Li Yunfei frowned all the way, thinking about what to do.

In fact, with his own ideas, the best way is to realize the self-production and self-sale of magic crystals and recycling. This is why he attaches so much importance to the "Brad-Polley" circuit, and why he has increased the research force of the War College. It's just that although this alchemy circuit has been invented for a while, the current efficiency is still too low, and it is impossible to mass-produce magic crystals, which is completely a drop in the bucket.

The system of semi-submersible ships in this underground river is extremely mature and fast, and it will soon reach the side of Falling Snow City.

Li Yunfei left the dock of the semi-submersible ship while thinking about it, and got on the dock of the dining heights through the sling.

"Lord Marquis, you're back! ...... Save the Grand Duke, save Waldo!" Li Yunfei had just stood firm when he heard a familiar voice coming, looking extremely eager and weak at the same time.

When he looked up, he saw an old man with gray hair coming to him covered in scars, half-kneeling on the ground, and said with a sincere face.

The old man was dressed in an emerald armor, but at this time it was all cracked and covered with blood, and it was obviously a tragic battle.

Not only that, but one of the old man's arms had been completely broken and hung down on one side of his body, and there was originally a long scar on his face, but at this time it had become several, which was extremely hideous and terrifying.

"Marquis Barlow!?" Li Yunfei was stunned for a moment, and then instantly recognized the identity of the person in front of him.

This person is the leader of the Emerald Cavalry in the Duchy of Waldor, known as Barlow, the Immortal Sword!

Why is he here? What happened to the Duchy of Valdor? Li Yunfei frowned, and then immediately asked, "How many giants are there?"

Needless to say, the Duchy of Waldo must have been attacked by a huge crowd, and it was to the point that the city would be destroyed at any time! Otherwise, this Barlow would not have left the Duchy of Valdo and came to Snowfall City for help!

"At least there are 80,000 giants, and among them there are more than thirty black iron giants, our Duchy of Valdo has been attacked by surprise and suffered heavy losses by surprise. If it weren't for the magic cannons that the adults left behind in Valdo before, I'm afraid that Valdo would have fallen by now!" Although Barlow was seriously injured, he still had a clear mind, worthy of his name of "Immortal Sword Candidate", so he continued: "It's just that those black iron giants are really cunning, and they quickly changed their strategy, allowing the low-level giants to only storm one portal, and at the same time throw boulders at the city wall, and my Duchy of Waldo suffered heavy losses. ”

"After we resisted for almost five days, more than a dozen black iron giants led almost 20,000 giants appeared, and this time there were even rock giants digging tunnels and digging down a section of the outer city wall, I led the emerald cavalry regiment to fight desperately to fight back this attack, but also lost an urn city. Barlow said with shame on his face, "After more than ten days of fierce fighting, although my Duchy of Valdo can still hold out for a while, it will collapse in a few days at most, and the casualties of the soldiers are too heavy to support it......"

"Originally, the Grand Duke didn't want to come to you for help, but we ...... We can't hold it anymore......" Barlow said with a look of shame.

"Marquis Barlow, hurry up, it's not your fault, it's really the giants who are too powerful. Li Yunfei's face was solemn, and he helped Barlow on the ground and said. In the face of so many black iron giants, it is already very commendable that the Duchy of Valdo has been able to hold out for so long.

Looks like Tina's little chick must be scared now...... Li Yunfei thought.

He had been busy with other things before, but he forgot about his slave girl, but now that he thinks about it, the Duchy of Valdo is also a principality that has been inherited for hundreds of years anyway, and there will definitely be enough accumulation of magic crystals and other rare metals......

Moreover, those principalities that have inherited hundreds of thousands of years, although their own combat strength is not good, but most of them are rich, and now they are facing the threat of giants, if they can save them from fire and water, there is nothing to collect some hard money......

I had been thinking about looking for ore veins and asking for money from the Golden Emperor City, but I forgot about these things...... The corners of Li Yunfei's mouth raised, revealing a fox-like smile, and the abacus in his heart had been started in an instant.

Then he said to Barlow: "Marquis of Barlow, don't worry, I was originally the marquis of the Duchy of Waldo, and it is my duty to save the Duchy of Waldo from danger, I will take people to the Duchy of Waldo now, so that those damned giants can understand the power of mankind!"

I don't know if Tina's little slave girl has been itching lately......

Thinking of this, Li Yunfei turned to the herald on the side and said, "Pass the order, the War Colossus No. 1 to No. 50 will be warmed up and charged, and in thirty minutes, follow me to the Duchy of Waldo!"