The Witcher: Son of the Planes.

Colin and Helen didn't contact Connie and her siblings. They couldn't wait for them a few days ago, so they temporarily teamed up with others and set off.

Although Colin was confident in his improved strength, as two intermediate wizard apprentices, there were very limited tasks that could be performed. After choosing for a long time, he chose a task to go to the underground world to purchase a batch of radium ore.

This task seems to be harmless and can be taken up by any junior wizard apprentice. However, it is not easy for a junior wizard apprentice to do this task. Although there is a passage to the underground world marked on the map, safety cannot be guaranteed when going into the underground world.

Colin accepted the task because he had an iron token from the caveman leader Tarim, which provided him with a channel of communication.

The academy's mission only looks at the results, and does not care how many foreign aids you hire. After all, the rewarded merit points are fixed, as long as you feel that you have not lost out.

Feeling that this task should not be too difficult, Colin specially brought Nora and Rose along, just to travel.

Before setting off, Colin specially bought a batch of food from the surface. In addition to some necessary equipment and medicines, he filled his boat with food and headed for the town of Barna.

……

Ten days later, Colin and his party arrived in the town of Barna. Because of the good relationship they had last time, Baron Lesta welcomed Colin's return.

After hearing Colin's needs, Baron Lesta sent his "old friend" Billy to him again.

Billy also made contributions last time. Not long after the last mission, Lesta rewarded him with a female slave.

After not seeing him for a year and a half, Billy already has a child, and his mining efficiency is much higher than usual.

Billy was much bolder this time. He knew that fortune and honor must be sought in danger. Since the wizards could come to the Barna Mine to find him again, it fully demonstrated his value. As long as he did a good job this time, he might even be able to become a small leader or something.

……

After resting for a night, Billy led Colin and others into the depths of the mine.

After the last mission, the connection between the mine and the underground world was blocked by Baron Lesta's men, but it was not completely blocked. The miners just stopped mining from this side.

After reaching the connection, Colin reopened the passage in a few moves.

Everyone began to walk down the passage.

Although Billy did not follow Colin and the others into the underground world last time, he felt much more at ease seeing that Colin and the others were able to return safely last time. This time, he walked in front and was not very afraid.

Maybe after the last time, Chief Tarim realized that his people were unreliable, and the surveillance personnel in the cave were withdrawn. As a result, Colin and the others said that they encountered some cavemen who took Tarim's token, but they arrived at the exit safely.

After arriving at the exit, they were quickly discovered by Tarim's patrol team. After showing Tarim's token, Colin and others were taken to Tarim's base.

The underground world also has mountains and water. No one can tell exactly how many layers there are, but the world on the first floor underground is already very vast. Tarim said that he is only familiar with some surrounding areas and an entrance to the second floor. He doesn't dare to go to other farther places.

Feeling that the strength of Colin and others had increased again, Tarim wanted to make friends with Colin even more. After all, there were not many friends on the surface who could bring food, and there were not many families in the underground world who could trade with the surface world.

Tarim has already made arrangements for the grain Colin brought. He would keep some for his own tribe. In addition to supplying it to himself and the great elder, he could also use it to reward some meritorious warriors in the tribe. The excess grain could be exchanged for some resources from other tribes. The next time the tribute was paid, he could also give some to the wizards underground.

Not to mention Tarim's idea, Colin sold the grain just as a side job. His main purpose was to ask where there was radium ore or where he could buy radium ore.

There is no radium ore around the Tarim tribe, but it should be possible to buy it from Daraben, an intermediate wizard apprentice he relies on.

For the sake of food and to make friends with Colin, Tarim enthusiastically contacted his patron Daraben.

……

The rules of the underground world are not as orderly as those of the surface world. They are often chaotic, somewhat like the practices of dark wizards.

Whoever can bring greater benefits to the Holy Tower will be more favored and will also be able to obtain more resources.

Even though Dara Beng usually shows off in front of various underground tribes, he is just a small figure in the underground holy tower. He usually helps the holy tower collect tributes in the area he is responsible for on the first underground floor, and occasionally he can get some small bribes.

There are at least eight hundred people with the strength of Dara Beng in the underground world, if not a thousand. However, because the underground is so vast and has so many levels, there is a shortage of manpower, which is why he seems to be somewhat useful and is considered an official member of the Holy Tower.

Daraben was wandering around the city of Montreux on the underground level when he received Tarim's message requesting him to pay tribute. At first, Daraben thought that he wanted to extend the time and delay the submission of tribute, so he didn't want to pay attention to it.

However, Tarim's continuous messages made Daraben interested. After contacting him, he found that it was indeed a good deal. The humans on the surface wanted to buy a batch of radium ore.

Doesn't this give him a chance to make money from both ends? Well done, Tarim did a good job this time.

……

With the help of Tarim, Colin was able to connect with Daraben. The strength of both parties was equal. One had mission requirements and the other wanted to get some water. They quickly reached an agreement and purchased the radium ore needed for the mission.

"Thank you so much, Wizard Darabon." Colin said flatteringly.

"No matter where you are, we are all part of the wizarding world. It is only natural that we share what we have with each other."

"I have earned dozens of wizard coins again. It's not in vain. It seems that I have the money to buy intermediate mental power potions." Daraben thought to himself.

"Let's exchange wizard marks and keep in touch more often in the future. Even if we don't do any missions, we can exchange some resource information and the like. If you, wizard Daraben, have the chance to reach the surface, you can also contact us." Colin also wanted to make friends with Daraben.

Daraben was not stupid either, and he quickly exchanged wizard marks with Colin. However, due to the strength of both parties, this mark had a distance limit, and they could not communicate if they were too far away.

After completing the mission, Darabon invited Colin to stay in Montreux for a while longer. After all, some specialties of the underground world are not common on the surface.

Even if there are, they are generally not up to the level of apprentices like Colin.

After telling Colin that he needed his help, Daraben hurried off to buy an intermediate level mental potion.