Beijing Sanlitun Flash Store

Quick answer：

Beijing Sanlitun is a popular shopping district in Beijing, China, known for its trendy shops and cafes. A 'Flash Store' typically refers to a temporary, pop-up store that opens for a limited time. These stores are often used for marketing events or to promote new products and brands. In the context of Sanlitun, a Flash Store would likely be a temporary retail space set up in the area to showcase new merchandise or host events.