China Post don't have post office in Russia. You need to use Russian Post to send your personal belongings. When it arrives in China, it will be handed over to China Post to deliver it.
I sent the parcel CP327504844CN from Harbin to Serbia. Why it has been returned to Harbin? I paid for sending from Harbin to Serbia, not from Harbin to Harbin. China Post didn't do their job and I am deeply unsatisfied.
China Post don't have post office in Russia. You need to use Russian Post to send your personal belongings. When it arrives in China, it will be handed over to China Post to deliver it.