A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

Siberian tigers frolic at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

Siberian tigers walk at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]

A Siberian tiger is seen at the Siberian Tiger Park in Changchun City, capital of northeast China's Jilin Province, Jan. 13, 2022. [Photo by Yan Linyun/Xinhua]