Mana Crystal is an important strategic material in the world of Asto, and since the discovery of Mana Crystal, this mineral that can generate magic has been an indispensable strategic reserve for the High Races. Even in some planes, mana crystals can replace currency as a general circulation.

With riots throughout the city, a large number of lizardfolk civilians fled into the swamp. There is nothing to be done about the human army, which is too small in number. However, the army besieging the palace still had a lot to gain, among which a bunch of wives and concubines of the "king of the swamp" were the biggest trophies.

These captured lizardmen nobles, usually pampered, hid in the palace, and did not even think of escaping. As a result, the mercenaries were caught right.

Looking at these weeping lizard people, it is hard to remember that this is some greedy and brutal race.

Soon, Zuode got the information he wanted to know from the mouths of these timid lizardmen nobles.

It turned out that the "King of the Swamp" Gesarn was originally just an ordinary wandering lizardman samurai, and by chance, he obtained a strange machine of a goblin engineer. This machine is very powerful and capable of detecting all mineral deposits within a kilometer of the surrounding area. It was with this rebellious machine that Gesarn amassed an astonishing fortune. When he became a legendary powerhouse and returned to the lizardman tribe, he used his massive wealth to raise the lizardmen's civilization to a big level.

"Oh, there's such a good thing, where is it?" Zode knew a lot more about goblin items than anyone else. This powerful artifact is likely to come from the heritage of an interstellar civilization. If you master this kind of machine, then you can greatly improve the strength of Zuode.

"My lord, this kind of secret treasure is naturally carried by His Royal Highness Gesarn himself. The shivering lizardman manager replied.

Zod didn't give up, and he interrogated the other lizardmen about the details of the machine, but everyone knew very little about the mysterious machine, and some of them were weird rumors. Just interrogated the address of the Magic Crystal Mine in the Undercity.

Zod had no choice but to give up for the time being, and began to urge the humans of the Undercity to collect all the wealth they could find, and ordered the mercenaries to take a few wizards to destroy the entrance to the magic crystal mine outside the city, at least for a year, this mine is not expected to produce anything.

After a night of tossing, the squares of the Undercity were filled with a mountain of treasures. All the once enslaved human beings, after a night of inspiration, have a preliminary understanding of the church that saves themselves, and some even become shallow believers in the church with great feelings.

These former slaves, led by priests, were involved in carrying supplies and belongings, spying on prisoners, searching for enemies, and so on.

The former slaves have outburst with great enthusiasm and have been of great help to this human army.

In the early morning of the next day, the exhausted mercenaries slowly gathered in the main square from all sides of the Dark City. In this intact open space around the original school field, a huge portal has been basically completed with the cooperation of wizards.

In fact, Zode had planned this step long before entering the dark swamp. The Undercity is home to nearly 10,000 human slaves, and after these slaves are freed, they must be brought back to the Holy Light. However, it is unrealistic for so many weak and tired humans to go through the dangerous and complex dark swamp together. The portal, then, is the only way to bring these humans back safely.

It was a short-distance portal, and Zod had previously set up a fixed teleportation point somewhere outside of the Swamp. As a result, the difficulty of teleportation is greatly reduced, and Doyle's wizards can barely make a solid portal within a hundred kilometers.

The wizard spies sent by Doyle to Haruman have already sent a magical message, and the "Lord of the Swamp" Gesarn has learned of the attack on the Undercity and is rapidly withdrawing his troops.

Time was running out for Zode, who was not sure if the news was accurate. But in any case, the "King of the Swamp" does have a fast information channel and knows the situation here.

If this legendary powerhouse leaves his army behind and rushes back alone, then he will be able to return to the Dark City at noon at the earliest. If that's the case, Zuo Deke will be out of luck.

So, Zod must speed up and lead all the humans out of here.

The portal has been set up, and this short-distance portal can only transport about ten people at a time, and the task is quite intense.

Fortunately, a large number of original magic crystals and finished products have been found in the kingdom of Undercity, which is enough to supply the energy consumption of the portal.

Time passed little by little, and a large amount of materials and personnel had already been transferred. And it was noon.

At this moment, a long dragon groan was heard from the depths of the distant swamp. The faces of the people who stayed behind immediately changed.

The overwhelming coercion shrouded the sky above the Dark City, and a huge black dragon appeared in front of Zuo De and them, the old dragon's body was full of ancient and mysterious runes.

Black Dragon Lord Kramoria, Ancient Black Dragon!

The Black Dragon Lord was quietly suspended in the air of the Dark City, staring at Zuode and them, not knowing what he was thinking.

"Honorable Black Dragon Lord, you have come at the right time, I am planning to send your heir, His Highness Takneo, to your territory......" There was no way, Zuo De had no choice but to bite the bullet and said,

"Your Highness Takneo, I have been invited to play in our territory for a while, and I have just been invaded by the lizardmen. With the help of your selfless Highness, we were able to overcome these greedy robbers. Got some loot. Of course, I am also ready for His Highness's share. Look at ......" Zuo Dexin said nonsense, he was not afraid of the dragonman's backlash, anyway, he really didn't abuse him much. As for being captured, the arrogant dragonmen will certainly not say it themselves.