"Every spell has its own grammar, formula, unique structure and pronunciation rules, with different invocation taboos."
"For instance, casting the 'Scenery Blessings, Brightness' spell requires bathing, fasting, and prayer that lasts seven to forty-nine days. Then there are spells from the Taoist Gate that, if you want to put into use, require the abstention from killing, thievery, and lying. And the curses handed down by the Gu Masters require one to draw power from killing, tormenting, and suffering."
"Countless paradoxes and clashes seriously hindered the inheritance and advancement of ancient magic knowledge... until the birth of the modern wizardry schools."