Postman Zhang Meichong walks on a snow-covered road in fog to send letters at a mountainous village in Enshi, central China's Hubei Province, Dec. 23, 2012. Equipped with a stick and two bags, Zhang Meichong, a village postman, has been working in the mountainous area for 15 years and traveled a distance about 180,000 kilometers these years. [Xinhua/Hao Tongqian]