A single social media post by a Chinese mathematics teacher in September 2026 became the vessel for a much older question: what does a nation owe to a foreign tongue? As artificial intelligence renders real-time translation nearly seamless, China finds itself weighing not just the practicality of English education, but the deeper matter of whose knowledge systems its students should be shaped by. The debate is less about language than about sovereignty, identity, and the kind of world China believes it is entering.