China visas

Hi,
I am a British national working in Korea with a flight booked to Beijing on 28 December. I have seen that the Chinese embassies in Korea are only open on weekdays, is there anyway I can post my application as I won't be able to go and apply for it and collect it during the week.
if not, are the travel agencies that are specified for Chinese visa applications open on the weekends or is there anyway to do it through the post through the travel agencies?
Thanks