Photo taken on August 13, 2014 shows the volunteers' handmade moscot 'lele', surrounded with different handwritings of 'welcome', pasting on the wall inside the main media center at the 2014 Nanjing Youth Olympic Games in Nanjing, capital of east China's Jiangsu Province. According to the Local Organising Committee, there are about 20,000 volunteers, most born in the 1990s, playing different roles in spectator services, competition services, medical services, food services, IOC members services, etc. with their vigor and hospitality. (Xinhua/Yan Yan)