"Silver powder that can burn...well, it should be a high-level material activated by magic, otherwise it would be impossible to do this. However, there is no burning sensation to the touch...um..."

The Marquis closed his eyes and meditated. On the other side of the long table, Miss Yulia picked up a thin slice and turned it around on her fingertips. Suddenly she was pleasantly surprised:

"Hey, you can record people's figures on this thin film!"

With a crash, five or six heads came together. The little lace umbrella rotated slightly, and the black light opened, covering half of the study room. In the black light, a faint figure appeared on the thin film at Miss Yulia's fingertips.

"Looks pretty good."

"Can be used to record enemy images."

"Perhaps we can also absorb part of the soul at the same time?"

"Is it used to curse? What a great idea! You can try it!"

"We need more experimental materials! Buy, buy, buy!"

The needs of the Vampires were passed from the Marquis of Turgu to the Archmage, and then from the Archmage to Gretel. In order to block the sun, protect the Vampires and undead creatures, and absorb images, the Vampires developed casting materials.

A surprisingly high price was paid:

For a single purchase of one thousand pieces, each piece costs five gold coins, with a total price of 5,000 gold coins.

"By the way, can it be cheaper for Black Crow Swamp?"

Archmage Grom asked by the way. It's a five-gold coin. A fledgling mage apprentice really can't afford it. However, the lower the level of skeleton soldiers, the more they need this thing...

"Okay! Otherwise, I will sell the patent to you, and you will be responsible for manufacturing and supplying, and you will just pay me some money?"

****

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