新时代的中国人-阳光大姐 (Sunshine Sisters)

What kind of business is "Sunshine Sisters"? What has enabled it to obtain special attention from national leaders? How was "Sunshine Sisters" founded? What different types of customer and problems have they encountered while providing a housekeeping service? How are the sisters enthusiastically engaged in work, and how do they overcome a variety of problems with calmness and optimism?