Can Russians in China go back to live in Russia?

Russians in China now have a necessary condition if they want to go back to Russia. They are descendants of Russians. This person's name, when did the household registration book come to China, and the name, passport number and certificate provided by Russian relatives? With these documents, they can go back to live in Russia. I met a couple in the Russian Far East. They are third-generation hybrids, so they can provide proof.