China's migrant children increase in number, visibility
Geng Ting, 11, had mixed feelings when she left her hometown three years ago to join her parents, who work here. "I was happy to rejoin my parents but unwilling to leave friends I'd grown up with," said Geng. She came to Beijing from Gushi County in Henan Province and is now a fifth-grader at the Longhai School for children of migrant workers in…