Chen worked at Yamanaga for 18 years, as an apprentice during the first five years, and a master craftsman during the last 13, at which time he did double duty as a teacher at the Taichung school.
而一進山中製造所就是十八年光陰的陳火慶，五年出師，之後十三年一面在製造所當師父，一面也在山中公管理的工藝傳習所當老師。