Din Tai Fung moved to its current location near Yungkang Street in 1972, where it faced tough competition from other salad oil vendors. However, the traditional oil business was already dying off, so to keep business going, Yang decided to put the connections he'd made in the restaurant industry to use, transforming Din Tai Fung into a restaurant specializing in Shanghainese food.
「鼎泰豐」在 1972 年搬到目前永康街口的位置時，受到瓶裝、桶裝沙拉油的競爭，傳統油行已經成為夕陽產業。為了生存下去，憑著自己過去在油行所建立起的餐廳人脈，他決定將鼎泰豐轉型為餐館，「鼎泰豐上海點心店」就此開張。