That's because they've got white fur instead of the more traditional orange and black stripes, making them much easier to spot in the wild.
The Harbin Zoo brought the cubs' parents from zoos in Sweden and Italy in 2000, and they've now had three sets of cubs.
Only one white tiger has even been found in the wild, back in 1951 in an Indian forest, and all the others born since are part of his giant family.