Giant pandas Hua Bao and Jin Baobao are due in Helsinki, Finland on Thursday at the start of a 15-year joint research program. /VCG Photo

Both of them are from the Dujiangyan base of the China Conservation and Research Center for the Giant Panda in Sichuan Province. /VCG Photo

When President Xi Jinping of China visited Finland in April 2017, the two nations signed an agreement for joint research on giant pandas, and to send a pair of pandas to Finland to live in the Ahtari zoo for 15 years. /VCG Photo