Easy to confuse. 😦
Nanjing Youth Olympic Games Aug 16-28th, 2014
3,600 athletes, 28 sports including Artistic, Rhythmic and Diving
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Nanning World Artistic Gymnastics Championships Oct 3-13th, 2014

A = YOG Nanjing, Jiangsu
B = Worlds Nanning, Guangxi

related – Olympics.org – The Year of the Nanjing Youth Olympic Games
Thanks Jeff.

