A panda cage is seen at Shanghai Pudong Airport in Shanghai, east China, Feb. 21, 2011. A pair of giant pandas left their home in southwest China's Sichuan Province Monday for a 10-year stay in Japan, under a joint research agreement on the endangered species. Female panda Xian Nu and male Bi Li, accompanied by two keepers from the China Giant Panda Protection and Research Center in Wolong, stopped in Shanghai before heading to Tokyo's Narita International Airport. They are scheduled to arrive Ueno Zoo at around 9 p.m.. [Xinhua]