Having studied the subject in Hong Kong and Taiwan, Zeng is a former acupuncturist, and organised acupuncture meet-ups as the president of the World Acupuncture Voluntary Organisation (WAVO).
Having studied the subject in Hong Kong and Taiwan, Zeng is a former acupuncturist. He once operated an Upper Serangoon Road-based acupuncture centre, and organised acupuncture meet-ups as the president of the World Acupuncture Voluntary Organisation (WAVO).