'It's been tough and very expensive'

Wang Fang's 4-year-old son, Guo Guo, has autism and has spent more than a year receiving training in Beijing. The family is from Changchun, Jilin province.

Guo Guo is good looking. He has a round face, big eyes and long lashes. He's very quiet and is often praised by strangers when he plays downstairs.

But sometimes he'll suddenly laugh out loud and won't stop until you order him to.