回複：I do not think you can renew

Thanks for your thought.

Yes, Canadian landing stamp is only my main concern. I no longer have maple leaf Card and my landing paper was stamped with "not valid for travel", which implies that I was granted a citiznship. But I hope Chinese consulate will not check every page of my passport or will acknowledge dual citizenship silently as many other countries do althogh law is not allowed.

I will try. If there is a good news, I will post it here to share