This study focuses on the digital migration of American TikTok users to a Chinese local social media RedNote, following the 2025 U.S. TikTok ban and its impact on intercultural communication between American and Chinese users. Through a qualitative analysis of 50 selected bloggers, their posts, comments, and constructed a timeline using public data, the research identifies three key areas: (1) primary interaction themes, (2) opportunities and challenges in cultural exchange, and (3) the sustainability of RedNote for the U.S. users. The findings reveal that lifestyle and language-learning content dominate cross-cultural exchanges, enabling users to develop mutual curiosity, informal cultural learning, and opportunities for clarification of misunderstandings. Regarding the timeline, the sustainability of RedNote for American users may be limited. This study demonstrates how platform design, linguistic accessibility, and sociopolitical conditions could collectively shape the sustainability of intercultural interactions online. Although digital migration can facilitate initial cultural engagement, long-term participation depends on the development of shared community norms and meaningful cultural resonance.
