The phrase "ribs rice cake is never a business" comes from a line in the TV series "Flowers bloom in Shanghai", which is spoken by the role Po, indicating that ribs rice cake is not only a kind of food, but also a deep emotional bond between the protagonists and memories of the past. Po said this because the ribs rice cake bears the deep feelings between herself and Miss Wang, and it is a witness of the years and friendship we have experienced together, not just a part of business transactions.