Visitors view paintings at a painting exhibition at the 798 art area in Beijing, capital of China, May 25, 2013. A two-day exhibition kicked off on Saturday, displaying paintings created by over 20 mentally retarded children from Chaoyang Anhua School. (Xinhua)

Visitors view paintings at a painting exhibition at the 798 art area in Beijing, capital of China, May 25, 2013. A two-day exhibition kicked off on Saturday, displaying paintings created by over 20 mentally retarded children from Chaoyang Anhua School. (Xinhua) 

A child copies paintings at a painting exhibition at the 798 art area in Beijing, capital of China, May 25, 2013. A two-day exhibition kicked off on Saturday, displaying paintings created by over 20 mentally retarded children from Chaoyang Anhua School. (Xinhua) 

Visitors view paintings at a painting exhibition at the 798 art area in Beijing, capital of China, May 25, 2013. A two-day exhibition kicked off on Saturday, displaying paintings created by over 20 mentally retarded children from Chaoyang Anhua School. (Xinhua) 

A child views paintings at a painting exhibition at the 798 art area in Beijing, capital of China, May 25, 2013. A two-day exhibition kicked off on Saturday, displaying paintings created by over 20 mentally retarded children from Chaoyang Anhua School. (Xinhua)