Chongqing Zoo Timeline

Shuang Shuang and his twin Chong Chong were lifelong adopted by Weilong (卫龙), renamed "霸小宝" and "道小贝."

Mang Cancan was born at Chongqing Zoo, the fifth cub of Mang Zai.

Mang Mang was born at chongqing_zoo.

Mang Zai gave birth to a single male cub weighing 191g — the heaviest newborn panda ever recorded at Chongqing Zoo. The cub was later named Mang Cancan via online poll in January 2024.

Yu Ai was born at Chongqing Zoo, daughter of Canada's Er Shun.

Yu Ke was born at Chongqing Zoo, twin brother of Yu Ai and son of Canada's Er Shun.

Qi Zhen and Qi Bao were officially named at their 100-day celebration, receiving the names "奇珍" and "奇宝."

Qi Bao was born at Chongqing Zoo, twin of Qi Zhen and son of Hao Qi.

Qi Zhen was born at Chongqing Zoo, twin of Qi Bao, daughter of Hao Qi (named by Nobel laureate Samuel Ting).

Xing Xing was born at Chongqing Zoo, twin of Chen Chen.

Chen Chen born at Chongqing Zoo, twin of Xing Xing, son of Mang Zai and Jin Ke.

Mang Zai gave birth to twin males Xing Xing and Chen Chen (161g and 151g), named in tribute to China's aerospace workers. Conceived via natural mating with Jin Ke on February 3, 2021.

Qing Qing was officially named alongside Xi Xi, Shuang Shuang, and Chong Chong at the 100-day naming ceremony — their names forming the phrase "双重喜庆" (Double Happiness Celebration).

Xi Xi and the three other cubs were officially named "Shuang Shuang, Chong Chong, Xi Xi, Qing Qing" at their 100-day naming ceremony — together forming the famous "Four Happy Meatballs."

Chong Chong was born at Chongqing Zoo, part of the historic "Four Treasures" twin pair.

Qing Qing was born at Chongqing Zoo as one of two sets of twins born on the same day — a first in the zoo's 60-year history. She and her sister Xi Xi complete the "Four Happy Meatballs."

Shuang Shuang was born at Chongqing Zoo as one of two sets of twins born on the same day — a first in the zoo's 60-year history.

Xi Xi was born at Chongqing Zoo as one of two sets of twins born on the same day — a first in the zoo's 60-year history. She was named through a global naming contest.

Xing Xing Jr. was born at chongqing_zoo.

Mang Zai gave birth to twin females, named Xi Xi (喜喜) and Qing Qing (庆庆) — her first litter.

Yu Bei was born at chongqing_zoo.

Yu Guan was born at chongqing_zoo.

Liang Yue was born at Chongqing Zoo, sole survivor of triplets.

Yu Bao was born at Chongqing Zoo, twin of Yu Bei.

Chong Chong moved to chongqing_zoo.

Er Shun moved to chongqing_zoo.

Qing Qing moved to chongqing_zoo.

Hao Qi was born at Chongqing Zoo, named by Nobel laureate Samuel Ting.

Ba Te was born at chongqing_zoo.

Hui Hui was born at chongqing_zoo.

Qing Lan was born at chongqing_zoo.

After a public naming contest co-hosted by Chongqing Zoo and Chongqing Morning Post, the name "Mang Zi" was chosen from 10 candidates. A naming ceremony was held at the zoo's panda hall.

Mang Zai was born as one of twin sisters at Chongqing Zoo to mother Ya Lao Er. The other twin was sent to Ya'an Bifengxia for hand-rearing.

Liang Liang moved to Chongqing Zoo where he continues to reside.

Le Le was born at Chongqing Zoo to mother Xin Xing.