The difference between round buns and olive buns lies in their shapes and uses. Round buns, also known as "steamed buns", are common cooking cakes in Asia. It is made of fermented dough, small and round, smooth outside and full inside. There are many kinds of fillings for steamed stuffed buns, including meat, vegetables and tofu. Some round buns are thin and some are thick. The round steamed stuffed bun is made by cooking, with a soft taste, and is often eaten as breakfast or snack. Olive bag refers to a kind of bread, which contains olive particles. This kind of bread is made of flour, water, yeast and olive granules. Olive buns are usually very long in shape, similar to traditional baguette, but with the addition of olive particles, the taste and flavor of bread are richer. Olive buns can be eaten as a staple food, can be accompanied by meals, and can also be used with various dishes. To sum up, a round steamed stuffed bun is a kind of cooked cake, which is generally round and contains various fillings; Olive steamed stuffed bun is a kind of bread, usually in a long strip shape. Olive particles are added to the bread to give it a unique flavor. They are obviously different in shape, manufacturing method and use.