After Kang was diagnosed with autism at 5 years old, his mom quit her job to care for him and his father bore the sole responsibility of earning money. The couple did not have a second child so they could focus on Kang.

Autistic children have difficulties communicating, as they often don't recognize or understand the emotions or feelings of others. Kang's parents tried to send him to a regular kindergarten, but he struggled to interact with the other children and his eccentric behavior drew taunts.

Kang had no formal schooling. He took up painting at age 12 in classes held at the Beijing Golden Wings Art Rehabilitation Service Center for Disabled Children, where he discovered his gift.

Now his work has won wide acclaim and been exhibited at galleries worldwide.

Fu Shuai, manager of the bookstore, saw Kang's work at a national children's artwork competition and thought the bright colors and vivid figures could add warmth to his store.

However, when Fu first offered the job to Kang, his mom refused, fearing her son would not cope. Fu persisted and convinced the family that Kang would get care and support. The bookstore offered Kang a special room as a studio and Kang was allowed to work at home or be accompanied by his mother in the store.

Fu says he never fears that Kang's behavior will hurt the business and he thinks his customers will understand. He says the job gives Kang contact with society and allows society to have contact with him and better understand autism.

"A bookstore is a window on civilization. A civilized society should provide opportunities for the disadvantaged," Fu says.