A volunteer from a local hospital in Handan city, Hebei province, checks the health of a child who suffers from autism, on April 1, 2013. Autism is a neural development disorder characterized by impaired social interaction and communication, and by restricted and repetitive behavior. Early behavioral or cognitive intervention can help autistic children take care of themselves, and gain social and communication skills. April 2 is World Autism Awareness Day. [Photo by Hao Qunying/Asianewsphoto]