China, the Chinese traditional-age was referred to as the "nominal age" (虛歲; 虚岁; xūsuì; 'incomplete age') and the Gregorian age was known as the "real age"...

throughout their life. The horoscope is calculated using the traditional sui (虛歲/虚岁 xusui or 毛歲/毛岁 maosui). This becomes important, for example in calculating...