Each year, the State Forestry Administration and China Zoo Association co-select dozens of giant pandas that are in best conditions for producing cubs.
The bears are chosen from different pedigrees to ensure the passing-on of diversified genes.
This year, 56 female pandas are included in the mating plan.
In recent years, China has frequently launched wilderness training projects for captive-bred pandas.
One of the main reasons of those projects is also to boost genetic diversity.
Giant panda lives mainly in the mountains of China’s southwestern province of Sichuan and northwestern provinces Shaanxi and Gansu.
They are threatened by habitat dwindling and low birthrate.
Only about 1,600 still exist in the wild, and some 300 live in captivity around the world.