Giant panda "Ya Shuang" eats an apple at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" eats an apple at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Er Xi" climbs a tree at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" tries to catch an apple at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" has bamboos at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)
Giant panda "Ya Shuang" enjoys itself at the Wild World Jinan in Jinan, capital of east China's Shandong Province, Jan. 6, 2019. Giant pandas enjoy themselves here in winter. (Xinhua/Wang Kai)