Yes,the melons will be moulded into small balls before adding it.
And before that, you must have put water that will be enough to cook your soup. So, there will be water in the pot before you add your melon, also remember that you will mix your melon with little water, before you add it.
Its not really a dumb question. I'm even happy to know that you were interested while reading it.
Ohh okay.. Now I get it. Glad to know it wasn't really a dumb question 😅