Yan Hongli can't stop her tears and self-blaming whenever she talks about her lost son, Han Zihang. She has learnt to post her son's information online and pleads for help from netizents. She often feels heartbroken whenever she hears news about children being crippled and forced to work as beggars by criminal gangs. "I would rather believe my son was abducted and raised by someone else. So long as he is safe, I will find him someday." [Photo/CFP]