Photo taken on July 2, 2018 shows male-female panda twins at Chengdu Research Base of Giant Panda Breeding in southwest China's Sichuan Province. Panda Qing He gave birth to the twins Monday morning. The female cub weighed 117.2 grams and was born at 7:53 a.m., with the male cub following 23 minutes later, weighing 140.8 grams. (Xinhua)