What about missing eight characters or something?

To see what the eight characters and five elements are missing, we should first discharge our own eight characters, and then find out the five elements corresponding to heavenly stems and earthly branches, and we will know that there are no five elements in the eight characters.

Five behaviors correspond to heavenly dryness: A and B are wood, C and D are fire, Wuji is earth, Geng Xin is gold, and Ren is water.

The earthly branches correspond to five behaviors: Haizi is water, Yin Mao is wood, noon is fire, Shen You is gold, and Chen Xu is ugly.

Take today as an example. It's half past eight, so the eight characters at this time are: Gengzi, Xu Bing, Renzi and Chen Jia.

Therefore, there are gold (Geng), wood (A), water (Ren, Zi), fire (C) and earth (Chen) in this character, so there is no shortage of five elements in this character.