Chinese UN peacekeeper Yu Peijie, 26, sings songs with children in Juba, South Sudan, in April. Yu is the leader of an all-female Chinese peacekeeping battalion in the African country. This year marks the 70th anniversary of United Nations peacekeeping operations and the 28th anniversary of China's participation in them. Around 2,500 Chinese peacekeepers are part of UN missions and are involved in activities ranging from minesweeping and road repairs to guarding sensitive installations and providing free clinics. China's comprehensive participation in UN peacekeeping operations over the years has earned it deep respect from the rest of the world. (Photo/Xinhua)