Giant panda Qing Hua enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality,bangalore industrial area Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Twin giant pandas Qing Hua and Qing Lu are pictured at a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qing Lu enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qing Hua enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Twin giant pandas Qing Hua and Qing Lu are pictured at a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qiao Yue enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qiao Yue enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qing Hua is pictured at a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qiao Yue enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Twin giant pandas Qing Hua and Qing Lu are pictured at a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qing Hua enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)

Giant panda Qiao Yue enjoys a birthday treat at Locajoy animal theme park in Yongchuan district of southwest China's Chongqing Municipality, Aug. 6, 2024. A special event was held to celebrate the birthdays of 3-year-old twin pandas Qing Hua, Qing Lu and 6-year-old panda Qiao Yue here on Tuesday. (Xinhua/Wang Quanchao)