This study explores how the TikTok ban in 2025 triggers the migration of American users to RedNote (Xiaohongshu) and analyzes how this digital shift shapes cross-cultural communication and interaction between Chinese and American netizens. Based on existing research on social media and cross-cultural interaction, this paper regards platform migration as a new field for cultural contact and identity negotiation. The research sampled posts from 50 Chinese and American bloggers on RedNote to identify the main discussion topics, interaction patterns, and potential risks of misunderstanding. Also, it evaluated user retention and platform sustainability by combining platform traffic data and migration timelines. Findings show that RedNote functioned as a short-term bridge for intercultural exchange, with dominant topics including lifestyle sharing, language learning, and cultural comparison. However, while the platform stimulates curiosity, empathy and informal learning opportunities, political discourse, stereotypes and algorithmic differences also give rise to misunderstanding and tension. Overall, this migration is more driven by the political context and shows phased and temporary characteristics rather than stable resettlement. The research highlights both the opportunities and structural limits of cross-platform cultural exchange in a digital environment.
