Which is more important, five squares, four pillars and eight characters?

The eight characters are their own birth passwords; It is very important that people's lives are closely related to this birthday;

Five grids are just a kind of naming, and the accuracy is very low; Wuge was only introduced to China from Japan in the last century; Zhouyi has been circulated for thousands of years. As an ancient Book of Changes, it is still valuable. Throughout history, it is not difficult to find names, figures, etc. Ancient people were selected according to Zhouyi;