In the eight-character numerology, heavenly stems and earthly branches has roots, but the nature of roots is different. Heavenly stems are included in fate, representing life, health, talent and emotional potential. The root represented by partial printing is "the root of talent", which means that individuals have certain artistic talent, learning ability and creativity. On the contrary, the earthly branches are included in fate, representing the main action, surrounding environment and work. The root of positive printing is "action root", that is, individuals have certain execution, initiative and enthusiasm.
Therefore, the partial printing of heavenly stems and the positive printing of earthly branches are both factors with roots in the eight characters, but they represent different roots. In numerology, the fate and characteristics of an individual's life are inferred from heavenly stems and earthly branches's relationship, so it is necessary to comprehensively judge the influence of various factors in fate.