The 'Design of mooncake packaging in 2019' refers to the artistic and functional aspects of mooncake packaging that were popular or innovative during the year 2019. Mooncakes are traditional Chinese desserts, typically eaten during the Mid-Autumn Festival. The packaging design often reflects cultural elements and can be highly decorative. It may include elements like intricate patterns, traditional Chinese motifs, and modern design techniques. This topic can be explored in terms of design trends, materials used, and the significance of mooncake packaging in Chinese culture.