In traditional Chinese astrology, the concept of "hidden stems" within the terrestrial branches is a complex and subtle one. It involves the interaction between the heavenly stems and the terrestrial branches, as well as the changes in their strength across different seasons and directions. This article will delve into the specific degree to which the strength of a heavenly stem weakens when it enters a terrestrial branch, as well as the impact of this change on an individual's destiny.

The Basic Principles of Hidden Stems in Terrestrial Branches

The hidden stems in terrestrial branches refer to the heavenly stems of the five elements contained within the terrestrial branches. Unlike the direct expression of heavenly stems, terrestrial branches not only represent their own original energy but also contain one or two heavenly stems of the five elements. In ancient astrological calculations, hidden stems were considered an important factor, especially when determining one's fate. The five-element attributes of terrestrial branches differ from those of heavenly stems, and each contains specific hidden stems of the five elements, which display differently according to the changing seasons.

The Yin-Yang Attributes of Hidden Stems in Terrestrial Branches

The yin-yang attributes of hidden stems in terrestrial branches follow the natural laws of yin and yang. The hidden stems in terrestrial branches during spring and summer are predominantly yang, while those in autumn and winter are mainly yin. This pattern reflects the process of growth to decline and the mutual transformation between yin and yang. For example, the hidden stems in the terrestrial branches of寅 (Yin) and 卯 (Mao) in spring, 巳 (Si) and 午 (Wu) in summer, 申 (Shen) and 酉 (You) in autumn, and 亥 (Hai) and 子 (Zi) in winter all follow this rule.

The Yin-Yang Principle of the Four Earth Repositories

The four earth repositories refer to the terrestrial branches 辰 (Chen), 戌 (Xu), 丑 (Chou), and 未 (Wei). Each of these contains three heavenly stems. The yin-yang attributes of these hidden stems are related to the seasonality and five-element properties of the terrestrial branches. For instance, the hidden stems in 丑 (Chou) and 未 (Wei) are both yin, whereas 辰 (Chen) and 戌 (Xu) contain both yin and yang heavenly stems. This arrangement reflects the role of the terrestrial branches in different seasons and their influence on the five elements of the heavenly stems.

The Hidden Stem Rules of the Four Longsheng and Four Taohua

The hidden stem rules for the Four Longsheng (寅, 申, 巳, 亥) and the Four Taohua (子, 午, 卯, 酉) are also related to their yin-yang attributes and seasonality. The hidden stems in the Four Longsheng include the original energy, the energy that generates the terrestrial branch, and the energy that overcomes the terrestrial branch, while the Four Taohua mainly contain the original energy. These rules reveal the interaction between the hidden stems in terrestrial branches and the heavenly stems, as well as the changes in their strength during different seasons.

The Hidden Stem Rules of the Four Earth Repositories

The hidden stem rules for the Four Earth Repositories (丑, 未, 辰, 戌) involve the original energy, the middle energy, and the residual energy. These hidden stems not only reflect the original energy of the terrestrial branches but also include the five-element energies associated with the seasons and directions they represent. This pattern illustrates the changes in the strength of hidden stems in terrestrial branches across different seasons and directions, as well as their influence on the five elements of the heavenly stems.

Through an in-depth analysis of the hidden stems in terrestrial branches, we can understand the patterns and extent to which the strength of a heavenly stem weakens when it enters a terrestrial branch. These patterns not only reflect the changes in yin and yang in nature but also reveal the interaction between heavenly stems and terrestrial branches. Understanding these principles is of great significance for the in-depth study of astrology and predicting an individual's destiny.