The eight-character peace can be understood as the lack of ups and downs in life (also lack of ups and downs, too dull).
You are wrong to say that the five elements are not lacking. The five elements (Jin Mu's five elements: fire, water and earth) are just the points of likes and dislikes, so it cannot be said that there are no five elements missing. Like or avoid is like this five elements, or avoid this five elements. But when your favorite five elements appear (a certain year, a certain month, a certain day), good things will be reflected around you. On the contrary, it is a bad thing.
Carefully analyze your five elements of likes and dislikes through the eight characters, and then combine the current five elements of year, month and day to know your current luck.
Of course, this is a very complicated analysis process with high technical content. The criticism of some fortune-telling software and many netizens who have only learned a little can only be entertaining.