Excuse me, are there any Japanese immigrants or orphans in Heilongjiang after the war?

When Japan invaded China, not only soldiers came, but also many local Japanese came to China to share the occupied land with them for farming. Most of them are in the northeast, but they are also in other places. After War of Resistance against Japanese Aggression, many of these people did not return to Japan and stayed in China, so they were called war orphans. Now the Japanese government has issued a policy that war orphans and their immediate family members, spouses and children within three generations can return to Japan, change their nationality to Japanese nationality and return to China in batches. But the quality of returnees is generally not very high.