What is Fu Yi?
Fu Yi is a core principle in BaZi astrology, centered on adjusting the strength or weakness of the Day Master (the heavenly stem of the birth day). When the Day Master is weak, one uses supportive deities or the same element to uplift it, called fu (support). When the Day Master is strong, one uses controlling or reducing deities to balance it, called yi (restraint). The ultimate goal is to bring the chart to a state of harmony, considered the foundation for favorable destiny.
Origin and Role
Fu Yi is tied to the philosophy of yin-yang and the five elements, where all things require balance. In BaZi, it helps identify the Useful God, the element or deity that benefits the Day Master. The Fu Yi method is often used alongside other methods such as climate adjustment (tiaohou) and mediation (tongguan).
How to Use Fu Yi in Chart Analysis
First, determine whether the Day Master is strong or weak based on the quantity and quality of interacting stems and branches. If weak, prioritize Resource (generating) or Peers (supporting) as Useful Gods. If strong, prioritize Officer (controlling), Output (reducing), or Wealth (draining) to restrain. However, avoid extremes: excessive support may cause dependency, excessive restraint may cause harm. Therefore, combine with other factors like birth season, earthly branches, and presence of other deities.
Distinguishing from Similar Terms
Fu Yi differs from Climate Adjustment (Tiaohou). Tiaohou focuses on balancing the temperature (cold, hot) of the chart, while Fu Yi emphasizes the overall strength of the Day Master. Fu Yi also differs from Mediation (Tongguan), which resolves conflicts between elements by providing a bridge, not necessarily based on strength. Additionally, Fu Yi is not the same as Disease and Remedy (Bing Yao), which focuses on finding the "disease" of the chart and the corresponding "remedy".
Notes on Application
Fu Yi is traditional knowledge for reference, not scientifically verified. Interpretation should be based on the entire chart and experience, not mechanically using one method. Learners should consult multiple sources and practice cautiously.