Core Points - The "Regulations on the Identification of AI-Generated Synthetic Content" officially took effect on September 1, requiring explicit and implicit identification of AI-generated content [1][2] - Major platforms such as DeepSeek, Douyin, WeChat, and Bilibili have announced measures to comply with these regulations, implementing identification features for AI-generated content [1][2] Group 1 - DeepSeek has added identification for AI-generated content on its platform, warning users against maliciously altering or hiding these identifiers [1] - Douyin has launched two key features: an AI content identification function to assist creators in labeling AI content and an AI content metadata identification function for content traceability [2] - WeChat and Bilibili are also implementing identification measures for AI-generated content, ensuring users can clearly distinguish such content [2][3] Group 2 - Douyin will verify and detect unmarked AI content, adding explicit identifiers where necessary, and will also provide implicit identifiers containing key information for content management [2] - Bilibili has introduced an identification option for creators to declare AI-generated content, with the platform ensuring compliance with legal requirements for unmarked content [2] - Previous investigations have highlighted issues with AI-generated content being used for misinformation and fraudulent activities, indicating ongoing challenges in content regulation [3]