One winter, an old avatar reappeared: an unedited video of a rain-soaked alley, a pair of hands folding paper cranes beside a steaming pot. No face, only hands aging like the maps they once used. The caption was simple: "For the next 100, for the ones who cannot speak." Donations spiked, but more meaningful were messages from recipients: "You sent me shelter," "You taught me to sew," "You brought my mother tea." A movement crystallized from empathy plus action.

Mei was stunned. "Who are you?" she asked, staring at 21755 in awe.