To Zhao Hai, creating a spell was a simple task. However, it was not so easy to understand the properties of all the ingredients after their properties had been altered.
Zhao Hai actually had another way to solve this problem. He had to find a way to make sure that the material didn't go through any sexual changes when he used his spiritual power to refine it. In that case, the material could naturally be used as a medium.
Zhao Hai had wanted to test this method at first, but he realized that it wouldn't work. After the materials were repeatedly refined with his spiritual power, they would inevitably undergo a sexual transformation. This was why he had to use another method. He had to summarize the materials and understand their properties. Only then could he conclude what the final properties of the refined materials were and use them as a medium for the curse.
