5The book features a passionate and clinically relevant synthesis of Dr. Liu's discipleship with Yang Zhenhai ( 楊真海), one of the last remaining master practitioners of Daoist acupuncture in mainland China. Liu's selection of this specific tradition for conscientious study and stewardship is based on affirmative answers to two essential questions: Is this lineage compelled by the objective to address the root of disease and vitalize the innate healing forces of the human body? Does the carrier of this lineage transmit his knowledge in a virtuous way?