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There is such a problem in the song of worshipping bones now. It is difficult to define which year is heavy, which month is heavy, which day is heavy, or even which hour is heavy. Anyone with a little common sense knows that the same time has different functions on different days. Similarly, the same month, in different years, will also show different strengths and weaknesses. Therefore, this algorithm of rigidly defining a certain time multiple of a certain year, a certain month, a certain day is definitely incorrect. As for sometimes being right, there must be a blow. For example, even if you can't tell fortune, you can say a few words at any time, and some words can be hit. Of course, I'm not saying that fortune telling is unreliable or useless at all. I just emphasize that the eulogy handed down today must be incomplete, and it must contain some conditions or preconditions, if it is really scientific. In the words of the Book of Changes, Yi includes "simplicity", "change" and "difficulty". Obviously, this rigid method has violated the taboo of "change".

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