The expansion of a 'favorable' mooncake packaging design refers to the detailed presentation or promotion of a packaging design for mooncakes, a traditional Chinese pastry typically consumed during the Mid-Autumn Festival. Mooncake packaging often reflects cultural elements, artistic design, and innovative features to appeal to consumers. This can include the use of eco-friendly materials, incorporating traditional Chinese art styles, or showcasing the brand's logo and product information. The concept of 'expansion' here suggests a comprehensive or detailed showcase of the packaging design, possibly for marketing or educational purposes.