In the eight characters test, each ten years is a major fortune, and each major fortune is represented by a word indicating the prosperity or decline, totaling twelve words: Longsheng (birth), Muyu (bath), Guandai (coronation), Linguan (official position), Diwang (imperial prosperity), Shuai (decline), Bing (illness), Si (death), Mu (grave), Jue (extinction), Tai (embryo), Yang (nourishment). In traditional Chinese astrology, these twelve terms are called "Twelve Longsheng" (the twelve stages of life), representing twelve types of fortune, not the physiological meaning, so there is no need to worry about encountering such terms in the major fortune.
Specifically, the meanings of the Twelve Longsheng are:
Longsheng: When a baby is born or when a new thing is just created, it has a thriving atmosphere.
Muyu: Also known as "defeat." After a baby is born, it needs to be washed to remove impurities; a new thing is just starting and is not yet perfect.
Guandai: From childhood to youth, one can wear clothes and hats, appearing dignified and well-mannered; a new thing has entered a beautiful stage.
Linguan: Also known as "entering wealth." When a person grows up, they can take office or earn money to support their family; a new thing has matured and its status becomes increasingly solid.
Diwang: A person reaches the peak of physical and intellectual strength, fully demonstrating one's abilities; a new thing has reached perfection and is recognized by society. However, excessive prosperity leads to decline, and whether it is a person or an event, reaching the peak also plants the seeds of decline.
Shuai: This is a period of qualitative change, where a person feels weak and powerless; a new thing has become old and faces challenges from other new things.
Bing: As a person ages, various diseases occur; an old thing is full of problems and hard to recover.
Si: After a person ages, physical death follows, indicating that things have reached their lowest point.
Mu: After the old thing dies, its remains are sent to a museum or stored in a warehouse, also called "storehouse." It represents the end of the old thing and the lowest point of fortune.
Jue: Also known as "receiving energy" or "fetus." Before a person is conceived, the mother's womb is empty; before all things are created, there is nothing visible.
Tai: Refers to being pregnant, the moment a person is conceived, or when all things begin to sprout underground.
Yang: Means forming, when a person is formed in the mother's womb, or when all things are formed underground.
In the Twelve Longsheng, Longsheng, Guandai, Linguan, and Diwang represent prosperous fortune, known as the "Four Prosperous Fortunes," while Muyu, Si, Mu, and Jue represent poor fortune, known as the "Four Adverse Fortunes," and Shuai, Bing, Tai, and Yang represent average fortune.