In fact, the original name of this delicacy comes from the ancient Chinese expression "meat in the steamed bun". It is an expression that puts the object in front. Putting the meat in front is to highlight the meat. This feature gradually evolved into the current colloquial expression, so the word "Yu" was omitted, and it became what we now call "Roujiamo".
In addition, there is another saying, that is, "jiamo" is a specific name, and it also refers to an action, which is to put ingredients into the steamed bun, for example Putting meat into the steamed bun is called Roujiamo. Putting vegetables into the steamed bun is called Caijiamo. In reality, there is also a snack called Caijiamo, but it is also called steamed bun with vegetables. Until now, it only has meat. The name of Jiamo has not changed.