Chen Yucun, director of the panda research and exchange center, shows the certificate of "the world's eldest giant panda in captivity" beside giant panda Basi at the panda research and exchange center in Fuzhou, capital of southeast China's Fujian Province, Jan. 17, 2017. Basi, world's eldest giant panda in captivity, turns to 37 years old, an equivalent of more than 100 human years. Basi was born in 1980 in Baoxing County, southwest China's Sichuan Province. And she is prototype for mascot Panpan for the 1990 Beijing Asian Games. (Xinhua/Wei Peiquan)