Two sets of panda twins born on same day in Chongqing Zoo(1/5)

Photo taken on July 16, 2019, shows two giant pandas each gave birth to twin cubs on the same day at the Chongqing Zoo. The four panda cubs weighed 547.8 grams, 529.9 grams, 643.5 grams, and 768.5 grams, respectively. (Photo: China News Service/Chen Chao)

Photo taken on July 16, 2019, shows two giant pandas each gave birth to twin cubs on the same day at the Chongqing Zoo. The four panda cubs weighed 547.8 grams, 529.9 grams, 643.5 grams, and 768.5 grams, respectively. (Photo: China News Service/Chen Chao)

Photo taken on July 16, 2019, shows two giant pandas each gave birth to twin cubs on the same day at the Chongqing Zoo. The four panda cubs weighed 547.8 grams, 529.9 grams, 643.5 grams, and 768.5 grams, respectively. (Photo: China News Service/Chen Chao)

Photo taken on July 16, 2019, shows two giant pandas each gave birth to twin cubs on the same day at the Chongqing Zoo. The four panda cubs weighed 547.8 grams, 529.9 grams, 643.5 grams, and 768.5 grams, respectively. (Photo: China News Service/Chen Chao)

Photo taken on July 16, 2019, shows two giant pandas each gave birth to twin cubs on the same day at the Chongqing Zoo. The four panda cubs weighed 547.8 grams, 529.9 grams, 643.5 grams, and 768.5 grams, respectively. (Photo: China News Service/Chen Chao)