Leaving the courtyard, Sunan walked towards the main building of the inner fort.
The patrol soldiers he met along the way saluted him and said hello.
Out of concern for keeping secrets, Sunan asked his eldest brother to block the news that he had become a wizard's apprentice.
Because of this, the civilians and ordinary soldiers in Blackstone City didn't know much about Sunan. They only knew that the lord's younger brother was somewhat withdrawn and lived in seclusion on weekdays.
Only the knights who knew the inside story would be in awe of Sunan from the bottom of their hearts.
Entering the main building, Sunan went straight to the study on the third floor.
Except for being in the meeting hall when discussing matters with the generals, Keyi usually handles government affairs in the study or goes to the martial arts training ground to practice.
According to usual habits, he should be in the study at this time.
As soon as she stepped into the corridor on the third floor, Su Nan saw a beautiful maid coming out of the study.
Looking at her disheveled clothes, red cheeks and damp hair, it was obvious that she had just experienced an intense exercise.
Seeing someone coming up, the maid turned around and saw that it was Sunan. She was startled and saluted at a loss.
"Master Su Nan."
Sunan gave the maid a strange look.
He vaguely remembered that the maid seemed to be a widow, but he didn't expect that the elder brother would be lucky.
"Go down." Su Nan waved his hand.
The maid hurriedly excused herself.
Sunan stood at the door for a while, then opened the door and walked in.
Key behind the desk had already dressed and was holding a book and reading intently.
Hearing the sound of the door opening, he raised his head and said with a natural smile: "It's Sunan, do you have anything to do with me?"
Sunan did not expose him, pulled up a chair, sat down, and asked, "How is the situation over there in the Black Stone Mining Area?"
"It went well!"
Mentioning the Black Stone Mining Area, Key suddenly had a smile on his face.
"It's only been half a month, and we've already made hundreds of gold coins by selling black stone iron."
"This is just the beginning. The output of the mining area will further increase in the future. When it stabilizes, the territory can earn at least four to five thousand gold coins every year by selling black stone iron!"
The annual income of a viscounty is probably only four to five thousand gold coins.
Blackstone City has an annual income comparable to that of the Viscounty in one city, which shows the strong gold-making ability of the Blackstone Mining Area.
"What's the reaction from Glitter City?" Su Nan asked.
There is too much movement in the Blackstone Mining Area, and it is basically impossible to hide it for long.
If nothing else, Glitter City Na must have known about the restart of the Black Stone Mining Area by now.
As long as Irving was not stupid, he would not be able to watch Black Rock City develop and grow relying on the Black Rock Mining Area.
He knew with his toes that he would definitely intervene.
Key's smile faded and he mused: "The buyers of black stone iron are mainly the lords and chambers of commerce in the Principality of Jinghua. If they don't take the route of Jinyan Province, it won't be easy for Owen to intercept them."
The Principality of Jinghua is as famous as the Principality of Stars, and its border happens to be adjacent to Black Rock City.
If we trade with them, the caravan route can reach Black Rock City without passing through the Golden Rock Province, and we don't have to worry about Owen taking advantage of checkpoints along the way to embarrass them.
Of course, Owen could have sent troops to cut off the route.
But in that case, if the Jinghua Principality is involved, the nature will probably change.
Unless absolutely necessary, Irving will most likely not be so impulsive.
It is necessary to prevent the other party from using other means.
"I plan to form a cavalry." Key suddenly said.
Su Nan raised his eyebrows and quickly reacted.
The reason why Owen was able to occupy the title of baron and silence the other three lords was because he had an elite cavalry regiment of 500 men under his command.
Black Rock City will face Irving sooner or later, and it must prepare for this in advance.
The best way to deal with it is to form an equally powerful army.
"It will cost a lot of money." Sunan said.
Key nodded: "Purchasing war horses and armor will cost a lot of money."
In this era, war horses and armor were extremely expensive items.
Buying a war horse and a set of armor is impossible without thirty or forty gold coins.
The subsequent cavalry training, war horse raising and equipment maintenance are even more huge expenses.
It can be said that the cavalry regiment is the Golden Cave, and most of the tax revenue of many territories is basically consumed on it.
It is precisely because of this that the number of cavalry under his command has become the criterion for judging the strength of a lord.
Even if Blackstone City had the cash cow of the Blackstone Mining Area, it would still be very difficult to form an elite knighthood.
"If that's the case, I have a solution." Su Nan's eyes flashed slightly.
"What can I do?"
Key's eyes lit up and he couldn't wait to ask.
Having seen many of Sunan's magical methods, it can be said that he has great trust in his younger brother.
Hearing Sunan say there was a way, hope suddenly surged in his heart.
"Black Rock Leopard." Su Nan said concisely.
Key immediately understood what he meant, and his eyes suddenly lit up.
He has already seen the fighting power of the Black Rock Leopard, which is even better than that of the knight.
The key is that this kind of puppet creation is not afraid of death, will not get tired, and does not need to eat. If it can be used as a mount, it is definitely the best mount!
"Can you refine the Black Rock Leopard?" Key looked at Sunan expectantly.
"It should be no problem." Sunan said.
Thanks to the gain effect of the active potion, the learning progress of puppet refining has accelerated a lot during this period, and now exceeds 90%.
In four or five days at most, he will be able to master this skill.
Then he will be able to refine the Black Rock Leopard.
"Great!"
Key was ecstatic, subconsciously stood up, and paced back and forth excitedly, not knowing what to say for a while.
The cavalry regiment with the Black Rock Leopard as its mount is definitely the strongest cavalry army in Jinyan Province.
If he could control such a cavalry regiment, the number of people would not need to be too large, just 300 people, he would have the confidence to counterattack the Flashing City!
In addition to being excited, Key looked at Sunan, and he secretly sighed in his heart.
After returning from the mine, he got the enlightenment book from Sunan, wanting to test whether he had the potential to become a wizard apprentice.
As a result, he opened the book and read only two pages, and his head hurt as if it was going to explode, so he had no choice but to give up.
It turned out that he did not have the qualifications to become a wizard apprentice.
For this, Key regretted for several days.
But later he also figured it out, it didn't matter if he couldn't become a wizard apprentice, as long as Sunan was there.
With Sunan's support, the two brothers will surely be able to revive the Yanest family.
After a while, Key calmed down his inner excitement and patted Sunan's shoulder vigorously.
"I'll leave this matter to you. If you can succeed, you will be a great contributor to our family!"
Sunan just smiled faintly when he heard this, changed the subject, and mentioned the purpose of his visit this time.
After hearing this, Key slapped his forehead and smiled, "I was just about to tell you about this."
He stood up and walked out of the desk, motioning Sunan to follow.
"A while ago, I commissioned the Fire Fox Chamber of Commerce of Jinghua Principality to help find what you want. They just arrived in Black Stone City this morning and should be resting in the tavern now. Let's go over and take a look."