Core Viewpoint - Recent reports indicate a surge in fraudulent activities involving fake trial cards from well-known retailers like Hema Fresh, Yonghui Supermarket, and JD.com, misleading consumers into providing personal information and downloading malicious apps [1][3][10]. Group 1: Fraudulent Activities - Multiple consumers reported receiving free trial cards from Hema Fresh, with some claiming that every household in their community received them [1]. - The cards prompted users to scan a QR code, leading to a customer service page that requested personal information and encouraged app downloads [3]. - Similar reports emerged regarding fake trial cards from Yonghui Supermarket and promotional gifts from JD.com, including gift boxes containing bowls and gift cards [3][8]. Group 2: Scam Mechanisms - Scammers use enticing offers, such as free gifts or high returns, to gain consumer trust before leading them into further scams, including joining "刷单" (order brushing) or investment groups [11]. - Consumers are warned against engaging with unknown packages or advertisements that promise free items or high rewards, especially those containing QR codes [12][13]. - Official responses from Hema Fresh, Yonghui Supermarket, and JD.com confirm that these promotional activities are not sanctioned by them, urging consumers to remain vigilant [14].