Chapter 186: Concocting Poison

Of course, Zhang Xuan wasn't merely putting on a show. He had flipped through several thousand books regarding poison in the kingdom's Book Collection Vault. Even though they are all elementary and insufficient for one to become an official poison master even if one read through all of them, it is sufficient for him at the current moment. His current motive isn't to become a poison master. He just wants to look for a way to achieve a perfect balance among these ten ingredients to create a safe...