Please tell me, master, how long does each book represent? Thank you.

There is a saying that six hexagrams predict a lifetime, but since ancient times, various books have different opinions. But according to ancient laws, if you take your life, you have to take care of it for ten years, the original divination for thirty years, and then infer the last thirty years from the rise and fall of the divination palace. Adding and deleting Bu Yi opposes this statement and thinks that the method of sharing is more appropriate. The author has proved that the estimated time per hour is inaccurate with nearly 30 years' valuable experience. Authentic divination also opposes this statement. As for Yi Yin and Yi Mao, not only did he not say the opposite, but he also made it widely known and put forward more imagination and extraordinary methods, such as flying to the palace. But as far as the accuracy of practice is concerned, the method of adding and subtracting Bu Yi is more suitable. It can be seen that no matter what kind of prediction is made, the method of setting the time every year is inaccurate.