Almost certainly VPN traffic. Most major LLMs block both China and Hong Kong (surprisingly, not the other way around), so Singapore ends up being the fastest nearby endpoint that isn't restricted.
[1] https://situational-awareness.ai/
[2] https://www.darioamodei.com/essay/machines-of-loving-grace
[3] https://www.darioamodei.com/post/on-deepseek-and-export-cont...