Eleven minutes before his shift ended, Xie Lin noticed that query frequency in the core database of Chengyu Central Hospital had climbed smoothly to nearly five times its usual level over nineteen minutes. The platform rated it a false alarm with a confidence score of 0.23. He spotted the manually rounded intervals of five hundred milliseconds and whole seconds in the probe's raw messages. With his evidence-gathering authorization on a gray badge counting down, he filed an urgent severity assessment and an on-site evidence collection request. But the Jiuming on-site team said they had never dispatched anyone.