Chinese Ambassador to the Democratic People's Republic of Korea (DPRK) Li Jinjun straightens the ribbons on the flower baskets during a commemorative ceremony in Pyongyang, the DPRK, on Sept. 30, 2017. Staff from the Chinese embassy commemorated martyrs of the Chinese People's Volunteers Army by holding ceremonies here on Sept. 30, which was the China's fourth Martyrs' Day. (Xinhua/Cheng Dayu)