Photo taken on Sept. 1, 2015 shows a giant panda cub at Chimelong Safari Park in Guangzhou, south China's Guangdong Province. The cub was born on Aug. 9. It is the fifth newborn giant panda of the park over the past three years. (Xinhua/Liang Xu)

A staff member puts a giant panda cub into an incubator at Chimelong Safari Park in Guangzhou, south China's Guangdong Province, Sept. 1, 2015. The cub was born on Aug. 9. It is the fifth newborn giant panda of the park over the past three years. (Xinhua/Liang Xu)

A giant panda cub receives a medical examination at Chimelong Safari Park in Guangzhou, south China's Guangdong Province, Sept. 1, 2015. The cub was born on Aug. 9. It is the fifth newborn giant panda of the park over the past three years. (Xinhua/Liang Xu)

Photo taken on Sept. 1, 2015 shows a giant panda cub at Chimelong Safari Park in Guangzhou, south China's Guangdong Province. The cub was born on Aug. 9. It is the fifth newborn giant panda of the park over the past three years. (Xinhua/Liang Xu)

A giant panda cub receives a medical examination at Chimelong Safari Park in Guangzhou, south China's Guangdong Province, Sept. 1, 2015. The cub was born on Aug. 9. It is the fifth newborn giant panda of the park over the past three years. (Xinhua/Liang Xu)