Changes and Interpretation of the Vocational Skills System — 黑暗征途：魔王的命运 Steam update #29169

This update has reclassified skill types, and each profession can only use skills that are unique to their own profession. Non professional skills previously learned after job transfer will no longer be usable. Skills will not be remade or cleared. (Passive skills will always be retained) The skills obtained from the skill book will be retained indefinitely without being restricted by profession.