xiǎoqū ménjìn lóudòng dānyuán diàntǐkǎ dōu kěnéng ràng shīfu jìnbùlái

小区门禁、楼栋、单元、电梯卡都可能让师傅进不来。

Community gates, building access, unit doors, and elevator cards may all prevent the delivery person from getting in.