India, Aug. 25 -- A university student working as a food delivery driver in China has been hailed a hero after spotting a blood-stained pillow with an emergency number scrawled on it, leading to the rescue of a woman trapped in her bedroom for 30 hours without food or water.

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The incident occurred on August 12 in Leshan, Sichuan province, southwestern China, according to a report by South China Morning Post(SCMP). The delivery driver, surnamed Zhang, noticed a white pillow on the roadside near a residential compound. It was stained with dark red liquid and marked with the numbers "110 625."

Alarmed by the sight, Zhang immediately phoned...