Liaozhai: I Have a Book on Dual Cultivation

Take an ancient book and travel to a fairy tale-like world, where fairies and demons do not appear, and humans, demons and ghosts coexist. I was lucky enough to be rescued home by an old Taoist priest, but he refused to teach me Taoism? Later I found out that it turned out that the original body had a special constitution and could not directly absorb the spiritual energy, but taking it internally had double the effect. It happened that the secret of the ancient book was cracked at this time, and there was actually a book of dual cultivation in it? Double cultivation? This should be considered internal use, right? This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.