Giant pandas play during their birthday party at the Chongqing Zoo in southwest China's Chongqing Municipality on June 23, 2020. (Xinhua/Tang Yi)

SW China's Chongqing Zoo held a birthday party on Tuesday for four one-year-old giant pandas named Shuangshuang, Chongchong, Xixi and Qingqing respectively.

The zoo invited tourists to join the birthday party and make a birthday "cake" for the pandas with bamboo leaves, bamboo shoots and fruits.

Four giant pandas enjoy food during their birthday party at the Chongqing Zoo in southwest China's Chongqing Municipality on June 23, 2020. (Xinhua/Tang Yi)

A staff member holds a giant panda to feed it a birthday "cake" at the Chongqing Zoo in southwest China's Chongqing Municipality on June 23, 2020. (Xinhua/Tang Yi)

A staff member holds a giant panda to feed it a birthday "cake" at the Chongqing Zoo in southwest China's Chongqing Municipality on June 23, 2020. (Xinhua/Tang Yi)

Staff members take care of giant pandas at the Chongqing Zoo in southwest China's Chongqing Municipality on June 23, 2020. (Xinhua/Tang Yi)

Visitors make a birthday "cake" for giant pandas at the Chongqing Zoo in southwest China's Chongqing Municipality on June 23, 2020. (Xinhua/Tang Yi)