Thanks for your prompt reply.
However, a friend read NVC instruction differently. She thought applicant had to submit the original ones to NVC, and the original ones would be returned at GuangZhou when being interviewed. I reread the instruction, but could not convinced her since there are some verbage about originals or certificate of photocopy...
I was thinking of sendinh the photocopies of all of documents instead of originals to NVC since I was very concerned about misplaced or lost originals.
Best regards,