By the time Lena and Claire returned to Toledo in a floating boat and then to crescent college in a carriage, a lot of business had accumulated.

First, Lena needs to send samples of coke to the headquarters of mercury balance for process testing. When everything is in order, Lena will entrust the production line to two alchemy workshops in rainbow tower for production.

Second, the trial of Piram has ended. In the final judgment, most of Piram's property has been paid as compensation to Lena and Antoine. They need time to deal with these uninhabited workshops.

Thirdly, several franchise agreements have been signed between the alchemistry workshops around price and Lena, which involves the issue of distribution and sales network, and requires a certain amount of energy to study.

Of course, there is a fourth point, but it belongs to Lena's personal affairs. He needs to find time to participate in the magic assessment and get the rank of a ring mage. He has decided to join the mercury balance, so this matter has a high priority.

Finally, what needs to be solved most is the renovation work of crescent college. The judges will come in a month. They can't see a dilapidated crescent college, and the construction work can't be completed overnight. So when coke made the first pot of money, Lena began to work in this area.

Lena came to a corner of the college, a dilapidated tower. This used to be an astrological Observatory for teaching astrology. But later, the teacher of this major left the school, and the course was abolished. As a result, it gradually declined and was occupied by weeds.

"The observatory can not only teach astrology, but also is a magic building. A standard scale Observatory can increase the speed of magic condensation in the area by 5%."

People close to Lena said that he was not tall, had a beard, and looked more like a dwarf. This is gro karat, a craftsman and mage from Prester.

Unlike ordinary architects, he is responsible for the repair of magic buildings, such as the alchemy workshop, the observatory and other buildings, which not only need ordinary design, but also need to adapt to the local magic flow. The simple understanding is that it depends on geomantic omen, so Lena found gro and made a repair plan for crescent college.

"That sounds good."

Reiner suddenly felt like playing the simulation construction game. He was a little curious about whether an astrologer would announce that this week is the week of mineral resources, and the output of all mineral resources would double.

Apart from joking, gro told lainer that a magic school should at least have an alchemy workshop, a star watching platform, an element tower and a nursery garden. If you specialize in the necromancer system, you need a graveyard, and the change system needs an animal pen. These buildings are not only common buildings, but also suitable for the growth of mages from the perspective of magic Magic, so that the school students can better draw strength.

Of course, the cost of building these magic buildings is much more expensive. Fortunately, crescent college originally had these buildings, but they were temporarily abandoned, and the cost of restoration was much less.

"Don't worry, principal Ian gray. We can finish the work in a week at the earliest."

Gro smiles and reaches for the green tower.

"The way of architecture here is very exquisite. In the past, I always wanted to enjoy the new moon college up close. You know, the history here can be thousands of years. These precious ancient buildings condensed the painstaking efforts of the craftsmen at that time. It was..."

boom -

a loud noise interrupted gro's dialogue. He and Lena just looked at the thousands of years in front of them In the corner of a tall tower with a history of 20 years, a burst of smoke came out, and several heavy stones flew out and fell on the ground, leaving a deep depression.

"... it's priceless treasure... Aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa

Gro almost collapsed. He quickly stepped forward, knelt down beside the huge stone, and sobbed as if looking at a dying wounded man.

"What's the situation?"

Lena subconsciously touched the ring between his fingers. Although there was no other change, he could not rule out the possibility of attack.

However, in the smoke of gunpowder, a figure rushed over. After a careful look, Lena found that it was a student of crescent college.

Dana Christine, a third grader, is not a good student in Lena's mind.

"Well, Mr. principal."

The girl was wearing a pointed hat, with flax curly hair, and a pair of emerald eyes. Now she was looking at Lena with a worried look. She held the corner of her clothes in her hands and looked down at Lena.

"Dana, what are you doing here? Are you not hurt?"

Asked Lena, looking up and down at the student, who did not look traumatized except for a lot of dust on her robe.

"No, no, I'm not hurt..."

it seemed that she was surprised that Lena still remembered her name. Dana was stunned, and then hesitated for a moment before she continued.

"Actually, I made the explosion."With that, she immediately hugged her head and squatted, worried that Lena would teach her a lesson.

However, the expected accountability did not appear. Instead, Lena said in a surprised tone.

"Wow, it's incredible that you can make such a big explosion."

"Well?"

Dana tilted her head, a little confused.

At this time, gro wakes up from the sadness of the destruction of historic sites and looks at the stones on the ground. He is also surprised.

"That's what you've made of yourself?"

These stones are extremely heavy, and the structure of the observatory itself is relatively stable, but now, it can be clearly seen that there is a hole on one side of the tower, which is the destructive force that can be achieved with high explosives.

The student in front of him was just a mediocre apprentice.

"Well, I used to practice magic here, but I failed to release it, which led to this result."

Faltering, Dana awkwardly tugs at the brim of her hat.

"Practice magic? It's hard work. What kind of magic do you practice?"

Lena remembers that the third grade students should not have been exposed to any offensive magic, so he was a little curious.

"Air burst, or master's hand, or fire?"

"Er, it's lighting, Mr. principal..."

Dana's hat brim is lower, and she dare not look directly at Lena.

"..."... "

they were silent for a long time before Lena asked uncertainly.

"Mr. gro, if I remember correctly, illumination should be a zero ring spell for lighting. It's not offensive, is it?"

"Well, Mr. Ian gray, in my memory, this spell should not be aggressive either."

Gro said, weighing the words.

"So, Dana, you're just releasing light to cause this kind of damage?"

Reiner confirmed that he couldn't believe it.

"To be exact, Mr. principal..."

Dana cautioned slightly timidly.

"... it's my failure to cast that."

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