What does the word "eight characters are too strong" mean? What exactly does that mean?

The "king" here is the same as the king in the fortune teller "Eight Characters Wang", which means the same thing. There is no specific meaning. Just like others said. Prosperity, wealth and so on are all prosperity. It also includes what attributes you belong to, not ordinary prosperity, but very prosperity. If well controlled, it is a sign of being rich and expensive. If it is not well controlled, it is a sign of great evil. This is mostly used for wealth and marriage. . . Hehe, actually I don't believe in these things either, so don't be so superstitious.