Indeed, the Path of Immortality has been annihilated for ten thousand years, and the Alchemy Skill has gradually disappeared. Various alchemy methods have been revamped to adapt to the rules of the Martial Path. In the ten thousand years, the changes of medicinal herbs have been tremendous, with the names being completely different. The Jade Slip Zhang Xiaohua obtained now is authentic alchemy from the Path of Immortality. Although the content is of pure lineage, the herbs used are completely different from the current system.
Hence, if Zhang Xiaohua did not have this Compendium of Hundred Herbs, even if he had the proper medicinal herbs in front of him, he might not be able to recognize that they were the herbs designated in the pill formula.
