Why do hotel dishes use "examples" as units? What does this mean?

In hotels, dishes are based on "examples": in Guangdong, especially in Shenzhen and Guangzhou. It means: small dishes, the prices of general restaurants will be marked as: example dishes (small dishes), medium dishes and large plates. When ordering, you can decide the large, medium and small dishes according to the number of people. Of course, the price is different, and the soup is also a little different: soup refers to the cauldron soup, and the general restaurant has cauldron soup every day. You can order soup if you like. Cantonese people love to make soup. There are a lot of soups in restaurants. Except soup, they are all made of casserole, and this nest (a casserole) is much more expensive. There is also a small cup of high-grade soup (about the amount of a small bowl), which is only for one person, usually only a few boxes. Besides the bird's nest mentioned by the landlord, there is also a shark's fin cup.

I wonder if the landlord understands? I don't know where the situation is.

My answer is the practice in Guangdong, but I'm not sure about other areas. In short, it is always useful for the landlord to know more. When I first came to Guangdong, I was very confused about ordering food. ....