so-young international inc. operates an online platform for medical aesthetics and consumption healthcare services focusing on discretionary medical treatments. its platform enables users to discover content and share their own experience on medical aesthetics procedures, and leads users to reserve treatment services from medical aesthetic service providers for offline treatment in the people's republic of china and internationally. the company facilitates research on medical aesthetic treatment trends; ratings and reviews on treatment experiences; and blogs under the name beauty diaries. it also provides reservation services in the areas of dermatology, dentistry and orthodontics, ophthalmology, physical examinations, gynecology, human papilloma virus vaccines, and postnatal care; software as a service; and guiding and consulting services through training programs for medical service providers. as of december 31, 2019, the company had approximately 6,100 medical aesthetic service prov