A team of family doctors goes from door to door to deliver medicine for free to low-income families in Qingdao's Huangdao district, also known as Qingdao West Coast New Area, on May 12. For years, the district has been sending teams of family doctors for free physical checkups and free basic treatment for low-income households. [Photo by Zhang Jingang/for chinadaily.com.cn]

A doctor gives an electrocardiogram to a woman at her home in Qingdao's Huangdao district, also known as Qingdao West Coast New Area, on May 12. [Photo by Zhang Jingang/for chinadaily.com.cn]

A nurse measures a woman's blood pressure at her home in Qingdao's Huangdao district, also known as Qingdao West Coast New Area, on May 12. [Photo by Zhang Jingang/for chinadaily.com.cn]

On May 12, a doctor introduces a resident from a low-income family to a "green channel" for medical treatment at her home. [Photo by Zhang Jingang/for chinadaily.com.cn]

A doctor checks the health records of low-income households at the clinic of Mengjiatan community in Qingdao's Huangdao district, also known as Qingdao West Coast New Area, on May 12. [Photo by Zhang Jingang/for chinadaily.com.cn]

A doctor measures the blood pressure of a resident of Mengjiatan community in Qingdao's Huangdao district, also known as Qingdao West Coast New Area, on May 12. [Photo by Zhang Jingang/for chinadaily.com.cn]

A woman waves goodbye to a doctor who conducted a health check for her in Mengjiatan community in Qingdao's Huangdao district, also known as Qingdao West Coast New Area, on May 12. [Photo by Zhang Jingang/for chinadaily.com.cn]