（原标题：先提价后打折、大数据杀熟，市场监管总局：禁止！） 据新华网报道，近日，市场监管总局发布"双十一"网络集中促销合规提示指出，平台要严格落实主体责 任。确保平台内商家的信息真实有效，所有规则都要公开透明。禁止"二选一""大数据杀熟"等违法行 为。对于大家关心的满减、优惠券、预售、保价等促销手段，平台必须明确告知使用条件、退款流程和 时间限制，让消费者看得明白，买得放心。平台不得无理干预商家的自主定价权。严格禁止先提价后打 折、虚假折价比价。 ...

Group 1 - The article emphasizes the importance of regulating promotional activities during the "6.18" shopping festival to maintain order in online transactions and protect consumer rights [1] - The State Administration for Market Regulation has issued compliance guidelines for various e-commerce platforms, including comprehensive, live-streaming, and cross-border e-commerce [1] - Platforms are required to ensure the authenticity of operator information, enhance algorithm compliance management, and improve transparency and fairness in online business practices [1] Group 2 - The guidelines prohibit unfair market competition practices such as "big data killing familiarity," false marketing, and fraudulent reviews [1] - Consumers are encouraged to engage in rational consumption and to report any illegal activities to the market regulation authorities to protect their legal rights [1]