Lama Yongden is the adopted son of the author, Alexandra David-Neel, who accompanies her on her trek to Lhasa. He is an ordained lama of a "red cap" sect, a type of Buddhist clergyman believed to have supernatural abilities to heal, tell fortunes, exorcise demons and see into the future as well as other magical skills. David-Neel explains that Yongden himself does not fully believe in the more superstitious elements of Tibetan beliefs, but he plays the part of the fortuneteller in order to placate the native Tibetans they meet along the way. His "fortunes" however are often just educated guesses tempered with practical advice given in a mystical form.