CHONGQING (CQNEWS) -- On June 23 last year, the giant panda “Lanxiang” in Chongqing Zoo gave birth to twin male pandas “Shuangshuang” and “Chongchong”, and the giant panda “Mangzai” gave birth to twin female pandas “Xixi” and “Qingqing”. It has been a year, and Chongqing Zoo specially held a birthday celebration, inviting the namer of baby pandas, citizens born on June 23, and tourists who love four treasures to attend, wishing the giant panda “Double Happiness” will grow up healthily.