Having lived in Japan for many years and having observed the improvements and diversity in Japanese cuisine and diet, Pa felt that this was definitely an area in which Taiwan fell short. Consequently, he invested money to open a restaurant which went on to earn him quite a lot of money. With his wife he also set up the Chenghsin Kindergarten. One of the oldest kindergartens in Taipei, it has won numerous awards.
拿到博士學位，巴信誠仍回輔大任教；由於他在日本多年，看到日本餐飲界的進步與多樣，覺得這正是台灣缺少的，於是又投資開餐館，賺了不少錢；而和太太合辦的正心幼稚園，是台北市最老牌的幼稚園之一，獲得的獎項多不勝數，是夫妻兩最大的驕傲。