Chinese President Xi Jinping (1st L) and his wife Peng Liyuan (2nd R) are welcomed by Tanzanian President Jakaya Mrisho Kikwete (2nd L) and his wife Salma Kikwete (1st R) upon their arrival in Dar es Salaam, Tanzania, on March 24, 2013. [Photo/Xinhua]

Sheep are herded on the highway in Huocheng county, Xinjiang Uygur autonomous region, on March 24, to head for greener pastures as spring arrives. [Photo by Ge Hanxu / For China Daily]