There was an elderly person who fell at the entrance of the community, lying on the ground and unable to get up. A circle of people gathered around, but no one dared to help. A delivery worker parked his scooter by the roadside, squatted down, then stood up, stood up again, and squatted down again. Finally, he took off his helmet, placed it next to the elderly person's head, called 120, and then rode away. His helmet had a Meituan crowdsourcing sticker on it, which was blown off by the wind. The elderly person was later carried onto a stretcher, still clutching the sticker—on which he had written with a ballpoint pen, probably during the few minutes waiting for the ambulance: "My name is Zhang Tao, I didn't hit him." He left his helmet beside the elderly person and went off to deliver the next order with his head uncovered.