Representatives of the United Nations African Union Mission in Darfur (UNAMID) pay respects to peacekeepers who sacrificed their lives, during celebrations of the International Day of UN Peacekeepers held by the UNAMID in Darfur, Sudan, on May 29, 2018. (Xinhua/Zhang Kang)

Chinese peacekeepers perform martial arts during celebrations of the International Day of UN Peacekeepers held by the United Nations African Union Mission in Darfur (UNAMID) in Darfur, Sudan, on May 29, 2018. (Xinhua/Zhang Kang)

Chinese peacekeepers perform martial arts during celebrations of the International Day of UN Peacekeepers held by the United Nations African Union Mission in Darfur (UNAMID) in Darfur, Sudan, on May 29, 2018. (Xinhua/Zhang Kang)