A "mooncake workshop" is a place where mooncakes are made. In Engpsh, you could translate this as a "mooncake bakery" or a "mooncake factory." Mooncakes are a traditional Chinese pastry that is often eaten during the Mid-Autumn Festival, which is a hopday that celebrates the full moon. Mooncakes are round or square and are filled with a variety of ingredients, including lotus seed paste, red bean paste, nuts, and fruit. They can be baked or fried and are often decorated with intricate designs on the top. A mooncake workshop is a place where these pastries are produced on a large scale for distribution to stores or for sale directly to consumers.