Tā cóng xiǎogōng zuò qǐ, zuìzhōng chéng le bāogōngtóu.
He started as an unskilled laborer and eventually became a foreman.
Tips
usage
小工 refers to an unskilled or general laborer, often in construction or manual work contexts. It can also colloquially mean a junior helper or assistant in a craft or kitchen setting.