The first group of public visitors watch giant panda Tian Tian at the Panda Enclosure of the Edinburgh Zoo, Edinburgh, Britain, Dec. 16, 2011. Giant pandas Yang Guang and Tian Tian, arriving in the Scottish capital on Dec. 4 for a ten-year cooperation programme, were open for public visit at the Edinburgh Zoo on Friday. [Photo by Zeng Yi/Xinhua]