Caretaker reluctant to let 'son' go

A teacher said moving to the US is the best option for an 8-year-old boy who he helped to raise

Zhu Zhenfeng saw his 8-year-old "son" Xiao Ao (assumed name) adopted by a family in the United States on Monday.

The boy with meningomyelocele, a type of spina bifida, was abandoned and sent to Anshan Children's Welfare Institute in 2008. Two years ago, Zhu, the only male special-education teacher at the institute, took Xiao Ao to his own home to give the boy a chance of studying with healthy children.