A mother of a autistic child plays games with two autistic boys in arehabilitation center in Harbin city, Northeast China's Heilongjiang provine on April 2, 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/Xinhua]

A child suffering from autism looks outward on abalcony of classroom in arehabilitation center in Harbin city, Northeast China's Heilongjiang provine on March 28, 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/Xinhua]

A child practises a training program in arehabilitation center in Harbin city, Northeast China's Heilongjiang provine on Sept 27, 2012.[Photo/Xinhua]

Children suffering from autism perform on a stage in arehabilitation center in Harbin city, Northeast China's Heilongjiang provine on April 2, 2013.[Photo/Xinhua]

Volunteers from a local hospital in Handan city, Central China's Hebei province, work with children who suffer from autism, teaching them about animals, 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]

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]

Volunteers raise public awareness about caring for autistic children by dancing and reciting poems in Shenyang city, Northeast China's Liaoning province, on March 31, 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/CFP]

Parents try to catch the attention of children who suffer from autism, at a special education school in Qingdao, East China's Shandong province on March 27, 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/CFP]

Autistic children learn how to make cookies at a help center in Beijing on March 21, 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 Zou Hong/Asianewsphoto]