Li Jinjun, Chinese ambassador to the Democratic People's Republic of Korea (DPRK), lays a flower wreath in honour of martyrs from the Chinese People's Volunteers Army at the Friendship Tower in Pyongyang, DPRK, on April 4, 2019. Staff members from the Chinese embassy held commemorative ceremonies here on Thursday in honour of martyrs from the Chinese People's Volunteers Army ahead of China's traditional Qingming Festival, or Tomb-sweeping Day, which falls on April 5 this year. (Xinhua/Cheng Dayu)