This video is made by Dr. Pearl Lin and Dr. Clare Fung's project, "Great Case of Marketing in the Hospitality and Tourism Industry." A special thanks to Yang Yi, who provided information and insights for this video. This case discusses the digital marketing strategy of Longfor Group, a major real estate and commercial conglomerate in China. Longfor has developed a comprehensive membership system called "Longzhu" that integrates various consumer touchpoints across its businesses, allowing customers to earn and redeem credits for a wide range of products and services. The membership program has successfully boosted customer loyalty and optimized the company's sales and expense ratio, transforming consumer data into valuable digital assets. However, the case highlights the need to balance data-driven insights with privacy concerns when building detailed user profiles.