The theoretical basis of FPA personality color can be traced back to ancient Greece. Hippocrates proposed the theory that 'there are no two identical people, but many people have similar characteristics'. Based on this theory, the FPA personality color system divides human personalities into four types: red, blue, yellow, and green. This classification is not only simple and easy to implement, but can also be quickly applied in practice to help people better understand and manage interpersonal relationships in the workplace and life.

The Phil personality test originated from Dr. Phil's application on the famous host Oprah's program and has now become an important reference for personnel departments in many large companies internationally. This test uses a series of carefully designed questions to help you delve deeper into your personality tendencies, providing powerful support for career planning.