Flash sale store case effect diagram typically refers to an illustration or visual representation of a temporary retail store designed for a specific promotional event. These stores are set up to create a sense of urgency and excitement, encouraging customers to make purchases quickly. The diagram might showcase the store's layout, product displays, promotional materials, and overall aesthetic to give a visual preview of the shopping experience.

Flash mobs are temporary, impromptu demonstrations or gatherings, often involving a large group of people performing a coordinated action or activity in a public space. They are often used in marketing and promotional campaigns as a novel and attention-grabbing method. Cases of flash mobs can include product launches, brand awareness campaigns, and social events. They are known for their unpredictable nature and ability to create viral content.