Tā / cóng / xué / tú / gōng / zuò / qǐ / jǐ / nián / hòu / chéng / le / jīng / yàn / fēng / fù / de / shī / fu他从学徒工做起,几年后成了经验丰富的师傅。He started as an apprentice and became an experienced master craftsman a few years later.