Release That Witch
Cheng Yan travels through time, only to end up becoming an honorable prince in the Middle Ages of Europe. Yet this world was not quite as simple as he thought. Witches with magical powers abound, and fearsome wars between churches and kingdoms rage throughout the land. Roland, a prince regarded as hopeless by his own father and assigned to the worst fief, spends his time developing a poor and backward town into a strong and modern city, while fighting against his siblings for the throne and absolute control over the kingdom. Join Roland as he befriends and allies with witches and, through fighting and even farming, pushes back invaders from the realm of evil.
When diaspore reached the gem class, it gave off a dazzling light due to its high refractivity and was highly polychromatic. Unlike other gemstones, which changed from one color to another, it gave off many different colors at the same time, most noticeably red and green. It was obvious why locals called it the multicolored stone. Roland did not connect the stone to diaspore when Barov was introducing it, but he instantly recognized it when he saw it in person.
Also, when diaspore was dehydrated, it would turn into corundum and gem class corundums were the famous ruby and sapphire. Compared to the former, the latter was even more renowned.
However, it was not the gemstones themselves that excited him.
"What about the residue dug out from the mine?" the prince asked excitedly as he closed the wooden box after a long time.
"Are you asking about... the debris from digging the mine tunnels?"
"That's right, and not just rocks, but mud as well. How did you deal with them?"