A few years later his younger brother Tsai Jui-ting (as the second son, he was given his father's surname) got married and followed in Wu Chien-lo's footsteps by selling baked goods and beverages. To avoid competing with his brother, Jui-ting opened up his store over ten kilometers north in Mailiao Township.
撐了幾年，等二弟蔡瑞庭（從父姓）結婚後也承襲哥哥的生意，經營餅店和飲料；為了避免兄弟打對台，蔡瑞庭把店開在離東勢十多公里的麥寮。