Giant panda Xinxing tastes a specially-made mooncake at Chongqing Zoo in southwest China's Chongqing, Sept. 24, 2018. The 36-year-old giant panda Xinxing is one of the oldest giant pandas in the world. This year's Mid-Autumn Festival falls on Sept. 24, the 15th day of the eighth month on China's lunar calendar. (Xinhua/Tang Yi)

Children and a staff member of Chongqing Zoo prepare a specially-made mooncake for giant panda Xinxing in southwest China's Chongqing, Sept. 24, 2018. The 36-year-old giant panda Xinxing is one of the oldest giant pandas in the world. This year's Mid-Autumn Festival falls on Sept. 24, the 15th day of the eighth month on China's lunar calendar. (Xinhua/Tang Yi)

Children and a staff member of Chongqing Zoo prepare a specially-made mooncake for giant panda Xinxing in southwest China's Chongqing, Sept. 24, 2018. The 36-year-old giant panda Xinxing is one of the oldest giant pandas in the world. This year's Mid-Autumn Festival falls on Sept. 24, the 15th day of the eighth month on China's lunar calendar. (Xinhua/Tang Yi)