The afterglow signals could be detected for longer than 7 min, and the signal‐to‐background ratio (SBR) of subcutaneous imaging at 30 s was as high as 310, demonstrating the great advantage of LPL materials in time‐resolved bio‐imaging with negligible background interference.[25] Further on, this LPL material was found to show excellent performance in cancer diagnosis. The gene discussed is LPL; the disease is cancer.