"Seven Fairy Maidens", characters in Chinese legend, wearing traditional costumes introduce the historical relics to tourists at the scenic area of the Longmen Grottoes in Luoyang, central China's Henan province, Aug. 10, 2013, on the occasion of the Qixi Festival, or Chinese Valentine's Day, which falls on Aug. 13 this year. [Xinhua/Huang Zhengwei]