"Until his death in 1976 Master Chuang, a descendant of 35 generations of Taoist Priests, carried out his ancient rituals for the benefit of a small band of believers in Taiwan. His family, who claimed to have come from Hua Shan, the Taoist mountain in western China, followed the observances of the Dragon-Tiger Mountain sect in southeastern China. Although there are many conflicting Taoist schools, the antiquity and authenticity of Master Chuang's traditions cannot be doubted.
Michael Saso, a Western disciple of Master Chuang, recounts the teachings of Taoist Master Chuang, including Taoist history as Master Chuang understood it, the role of Taoist Priests in modern Chinese society, and Master Chuang's own rituals of Taoist black magic, meditation, and rarely discussed exorcistic thunder magic."
thx to @Superstition24