sentences:  They named it Din Tai Fung by combining the names of Yang's previous employer, "Heng Tai Fung", and their new supplier, "DinMei Oils".Around 1970, tinned cooking oil became prevalent, and business diminished drastically.Heng Tai Fung's owner suggested that to survive, Yang and Lai convert half the shop to making and selling steamed buns (xiaolongbao).