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The China National Youth Games is a quadrennial multi-sport event for Chinese athletes under the age of twenty-one .. China. People's Republic of China. multi-sport event. multi-sport event. It was first held in 1988 as the China City Games .. China. People's Republic of China. The competition switched to be held the year before the Summer Olympics in the second edition in 1991 .. Summer Olympics. Summer Olympics. It has been held every four years since then and was given its current name from 2015 onwards , matching the nomenclature for the newly launched Youth Olympic Games .. Youth Olympic Games. Youth Olympic Games. The purpose of the games was to improve the performance of China 's best young athletes and promote widespread involvement in sport .. China. People's Republic of China. Teams are organised on a city or district basis -- in line with the designation of Chinese cities , athletes may come from the metropolitan area or its surrounding area .. Chinese cities. List of cities in China. There are also teams sent by national organisations , such as the People 's Liberation Army Navy .. Following on from revelations of doping in China , the competition incorporated its first blood tests in the 1999 edition .. China. People's Republic of China. doping in China. doping in China. This trend continued , with over 1200 out-of-competition drug tests happening as part of the 2007 City Games .. One cyclist and one wushu competitor were disqualified as a result .. wushu. wushu ( sport ). Anti-doping educational events were also held for both athletes and coaches .. The athletics competition has provided high level performances including a women 's 5000 metres world junior record by Jiang Bo in 1995 , and another in the women 's javelin throw by Xue Juan in 2003 .. athletics. sport of athletics. 5000 metres. 5000 metres. world junior record. List of world junior records in athletics. Jiang Bo. Jiang Bo ( runner ). javelin throw. javelin throw. Xue Juan. Xue Juan. It has also featured future champions in the sport , including Olympic hurdles champion Liu Xiang and world marathon champion Bai Xue .. Liu Xiang. Liu Xiang ( hurdler ). Bai Xue. Bai Xue