Compared with good fortune and fleeting years, the birth date is more like the "fate" that is often said among the people, which is innate and innate, while the first two are more like the so-called "luck" , has a profound impact on "fate". The birth date and horoscope have already been accomplished at the time of the birth of the host. The prosperity and decline of the five elements are difficult to make up for and resolve simply by wearing some auspicious items. Moreover, each of the five elements has different effects on the host. Sometimes the lack of it may not necessarily be a problem. It is not good, for example, what is lacking is exactly what one is afraid of; and if some of the five elements are too strong, it may not be beneficial. The so-called "moon gain and loss", the balance state between the five elements that the Zhouyi study focuses on, focuses on each of the five elements. The comparison of their respective strengths and their influence on the host himself (that is, the day stem) cannot be simply understood based on the number of the five elements. A deficiency is bad, an excess is good, and the so-called "balance" is reached if the average number is similar. If there is indeed a lack of certain five elements in the horoscope that are beneficial to you, using the knowledge of the Book of Changes to seek advantages and avoid disadvantages is more often to follow the trend of great fortune, and to take some countermeasures in some special fleeting years to change the "innate destiny" - -Birthday and horoscopes are basically recognized as impossible to achieve in Zhouyi academic circle.