Your eight-character sun pillar is Renshen, and Tianqianren represents yourself. All the characters in the eight-character are related to Renshui to determine their six-parent status. Wu soil is the one that overcomes Ren Shui, and the one that overcomes it is Guan Sha (killing). Since Wu soil is yang soil and is of the same nature as Ren Shui (yang water), Wu soil is partial official, also called Qisha, all analyzed It's just a code name for the horoscope.
When you are 32 years old, you will have the Wuyin Grand Luck. Wu is the Seven Kills, so you will face the Seven Kills at the age of 32 and the official luck at the age of 42.
Which year is good and which year is unlucky should be analyzed based on the horoscope and the luck of the year. It is not necessary to look at the names of the characters and which year is unlucky.
I hope this helps you.