Double, heavy and happy, Phoebe. According to the website of China Daily, the "Panda Sky Group" in the park is two pairs of twin pandas, whose names are Shuangshuang, Chongzhonghe Xixi and Phoebe, which means "Double Happiness" and are affectionately called "Four Happiness Meet Ball" by netizens. Giant pandas belong to Xiong Ke and mammals, and there are only two subspecies. The male is slightly bigger than the female, with a bear-like figure, plump and short head and tail.