share time: 2025-10-12 00:32:22
The million-dollar "extended Goldbach conjecture problem" from the International Mathematical Union stumps top students worldwide for three days. Lin Xiaoman, a middle school girl delivering public welfare materials, accidentally enters the venue. After gazing at the blackboard for half a minute, she suddenly circles an overlooked basic formula—"parity complementarity of primes"—and breaks the deadlock with one sentence. When everyone is shocked and asks about her education, she takes out a faded middle school diploma and whispers, "This was the last problem my math teacher taught me before he died. He said no matter how hard a problem is, its root is in the textbook."
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