Age restriction on visa bio requirements.

Previously visited China on a number of occasions before but require a new visa to visit again. I am a male UK born resident aged (73), say that as my birth day is on 15. December 1946 (when I apply for my new visa). Told that there are no requirements or appointments to attend for older applicants for Chinese visa Bio applications, can you confirm. If so can my application be carried out by 1st class Royal Mail service, please attach applicable forms necessary to complete this. Regards, Donald Kane.