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.
"I need an additional ammonia plant and a saltpeter plant. You knew that, didn't you?" Roland asked.
Agatha and Paper had been working on these two materials, but the production rate was not satisfactory due to the lack of catalysts. Although their method was much better than the original acid-making method that involved saltpeter, they could not further increase the production as a result of limited manpower and magic.
After Roland obtained a copy of the complete periodic table of elements, the chemistry laboratory immediately started to make sample elements. With Lucia's help, the Ministry of Chemical Industry was now able to create a sample for every element on the table, including many rare elements such as platinum and rhodium that were normally used as catalysts in chemical reactions.