Chinese ambassador to Serbia Zhang Wanxue (4th R, first row) shows his respect for three Chinese journalists killed in the U.S.-led NATO bombing of the Chinese embassy in Belgrade in front of a monument in Belgrade, capital of Serbia, on May 7, 2013. Shao Yunhuan of Xinhua News Agency along with Xu Xinghu and his wife Zhu Ying from the Beijing-based Guangming Daily newspaper were killed in the missile attack which inflicted serious damage to the embassy buildings on the evening of May 7, 1999. (Xinhua/Wang Hui)

Photo taken on May 7, 2013 shows a monument to commemorate three Chinese journalists killed in the U.S.-led NATO bombing of the Chinese embassy in Belgrade. Shao Yunhuan of Xinhua News Agency along with Xu Xinghu and his wife Zhu Ying from the Beijing-based Guangming Daily newspaper were killed in the missile attack which inflicted serious damage to the embassy buildings on the evening of May 7, 1999. (Xinhua/Wang Hui)