Giant panda Hua Ao eats zongzi (rice dumplings), a kind of traditional food for the Duanwu Festival, in Yantai city, east China's Shandong Province on June 4, 2011. The Nanshan Zoo of the city invited citizens to make zongzi for two giant pandas, Qing Feng and Hua Ao in the Duanwu Festival holidays. The festival, also known as Dragon Boat Festival, falls on June 6 this year. (Xinhua/Guo Xulei)