![People mourn for martyrs across China ahead of Qingming Festival(1/5)](http://www.ecns.cn/hd/2018/04/05/30c8d69b6b304b55aa3ea3bb9e152438.jpg)
Police officers pay tribute in front of a monument of war heroes in Yantai, east China's Shandong Province, April 4, 2018. People mourn for the deceased as the Qingming Festival, the Chinese tomb-sweeping day, approaches. (Xinhua/Tang Ke)
Police officers pay tribute in front of a monument of war heroes in Yantai, east China's Shandong Province, April 4, 2018. People mourn for the deceased as the Qingming Festival, the Chinese tomb-sweeping day, approaches. (Xinhua/Tang Ke)