article_snippet: Lu's mother abandoned Lu after Lu was born and Lu father works as a carpenter in Shandong province hundreds of miles further north.
article_snippet: In China, Lu is what's called a "left-behind child.
article_snippet: Conservatively, there are at least 61 million such children in China
article_snippet: at least 61 million such children in China struggle at school, have higher rates of mental health issues, and suffer from more behavioral problems than at least 61 million such children in China contemporaries.
article_snippet: The All China Women's Federation, a state- backed organization, paints a bleak picture for left behind children.
article_snippet: A steady stream of state media reports highlights the abuse suffered by left behind children.
article_snippet: CNN's Serena Dong contributed to this report.
highlights_snippet: One in five Chinese kids are "left behind"
  five Chinese kids parents are migrant workers who leave rural areas for the cities .
  