This early handbook was written as a practical guide to understanding personality in a simple, human way. It emerged from Helen’s early teaching and personal practice, shaped by lived experience rather than standardized tests. It's Chinese version was available on most online book stores in China, such as Dang Dang bookstore. No professional consultation or commercial assessment is required—its ideas can be applied gently in daily life. These materials are shared freely, in the same spirit in which they were created.