For the past 20 years, he has devoted himself to the study of Tibeto-Burman minority groups. He is an expert at natural dyeing and textiles and a professional dealer and collector of Oriental art and crafts. His photographs and essays have been published in a number of periodicals, and he is the author of several books, including his most recent, Meet the Akha.
二十年來從事藏、緬地區少數民族研究不遺餘力，精通天然染色及紡織，以收集及經銷東方工藝品為業，攝影與文字作品曾刊於數種國際期刊中，並著有多本著作，最新著作為《與僾尼人相遇》（Meet the Akha）。