Haven't seen the line here... Got my card done in a week instead of two.
Come Fridays after lunch. Wait time <5 minutes.
To get in and out quickly, line up at 8:15 before they open at 9am. Earlier than that won't save you much time.
Very clean men's room :-)
Holy shit, the whole office operates in Cantonese
Came in advance (40 mins before) to be served fast
Going from 1-2pm on a weekday is faster than any other time.
Comfy chairs, lots of elderly Chinese. Make sure you have all the right documents!
If you go in after noon on weekdays there's no line and no patdowns
Make sure your phone is fully charged and you are well fed- this may take awhile
Make an appointment online first. Waiting for 1hr+ sucks. Prepare to get patted down by security too.