Lovers set pigeons free at the Shaohuashan Mountain in northwest China's Shaanxi Province, May 20, 2015. A total of 52 pairs of lovers from countries along the silk road, such as Iran, Kirgizstan, Kazakhstan and so on, gathered on Wednesday at Shaanxi's Shaohuashan Mountain for a tour symbolizing their love, as "May 20" in Chinese language is pronounced similar to "Wo Ai Ni", which means "I love you". (Xinhua/Liu Xiao)