A delinquent juvenile sends a thank you letter - after folding the note into a paper crane –to his tutor at a correctional center in Hefei, East China's Anhui province, May 4, 2011. Four teachers at a local elementary school visited the center ahead of Mother's Day to talk to offenders. It was reported that most of the delinquent juveniles committed crimes because a lack of proper education and parental care.[Photo/Xinhua]