A soldier assigned to the 12th Chinese Peacekeeping Infantry Battalion to the United Nations Mission in South Sudan (UNMISS) smiles after receiving the birthday gift from his fellows. (eng.chinamil.com.cn/Photo by Wang Liguo)5月8日为世界微笑日，让我们一起感受中国蓝盔的微笑瞬间。图为中国第十二批赴南苏丹（朱巴）维和步兵营官兵收到生日礼物后的笑容。（英文中国军网/王利国 摄）