Major Chinese social media platforms, including Tencent's WeChat and ByteDance's Douyin, have implemented new features to comply with a law mandating the labeling of AI-generated content. Effective Monday, the regulation requires both explicit labels visible to users and implicit identifiers like digital watermarks. With growing concerns over misinformation and copyright issues, the Cyberspace Administration of China emphasizes this initiative as part of its broader campaign to enhance AI oversight and clean up cyberspace.