Youth Olympic Games, a comprehensive sports event, is designed for young people all over the world. The second summer youth Olympic Games was held from August 16, 2014 to 28 in Nanjing. Its slogan is "Share the youth, Build the future”, which means the young people around the world in the Olympic spirit, get together and play each other, encourage each other, enhance friendship and grow up together. Its Mascot comes from rain flower stones, advocating a lifestyle of natural, sports, healthy and happy; Its emblem will outline NANJING Ming city wall gate and folk houses together, with the idea of the gate of youth.