For example, the optimization problem of magic circles.

When drawing a magic circle, magic materials are needed. Depending on the size, functions of the magic circle, etc., the required materials are converted into money and at least one gold coin is needed. If it is a large magic circle, the consumption of hundreds of gold coins is common.

For example, Roland's multi-person teleportation magic array, the materials needed for drawing are converted into money and can start at least five gold coins. If it is a large teleportation magic array, such as the one that teleports hundreds of people at a time, Roland will probably start at least one hundred gold coins.

Therefore, if the magic array is to be promoted and used on a large scale, it must be optimized.

Get cheap.

The Star Meteorite Class's mentor Floyd came up with a pretty trick, a mold-type magic array.

Boil it into juice with a very cheap magic grass, pour it into the mold, and then directly "cover" the magic circle on the ground.

This magic grass juice has strong magical conductivity, but it is very easy to evaporate. The magic array can only be used once and will disappear.

But this way, not only can the magic array be quickly formed, but it can also disappear after one use, which can greatly ensure the secret of the magic array and will not be learned by others.

The magic array created in this way will cost no more than one silver coin at a time.

And the small ones are probably just a dozen copper coins.

But Freud did not say what materials are suitable for molds and what materials are suitable for magic circles, so that students can experiment and find them themselves.

This is his unique experience and will not teach others casually.

I have to say that there are still two tricks to become a legend.

Roland returned to the manor... Now his manor is already very beautiful, with large areas of flat grass and beautiful stone roads.

There are more than a dozen ordinary maids in the manor who are doing their work.

Andonara sat in front of the building, with a small round table in front of her.

Catwoman Marilyn was wearing a black and white maid outfit and listened to the scolding with grievance.

"How many times have I said that the bed belongs to Roland and I. Don't just go in and sleep when you see the soft white blanket. Be careful that Roland treats you as me, strips you naked and eats you."
Chapter completed!