Yung-chi, who was already in the food industry, found a maker of Hsinchu-style meatballs to study under, while his brother Yung-jen made investigative trips to Guangdong and planned a factory.
原本就在食品業工作的勇吉找上了專門製作新竹貢丸的老師傅，學藝的同時，哥哥勇仁幾次來到廣東考察，構劃設廠。