One of the volunteers, Cheng Wan-ching, softly waves a net in the air and catches the butterfly. She kneels down to extract it and then softly spreads its wings against her leg. On them she writes with a waterproof black marker: "CC1117.'
義工鄭菀菁身手輕盈地揮舞蝶網朝空中一撈，一隻「端紫斑蝶」進網，蹲下把蝴蝶取出，輕捏蝴蝶腹部讓翅膀對折放在腿上，用油性筆在黑褐色薄翅上寫下「cc1117」。