I think my predecessor used to be a useful pillar. I was buried alive for many years, and now I finally see the light of day.

The predecessor of coal used to be a useful pillar. It was buried underground for many years, and now it's going to be seen again. Literally speaking, it is about the formation process of coal, and its deep meaning is that I was originally a useful talent of the country, but under the oppression of the dark reality in the past, my patriotism was buried deep in my heart, and I couldn't express it, but I didn't want to serve my country.