>>323682895
you're gonna need to learn some weird chinese characters in order to know what 1-9 of man look like, don't worry it's really not that bad.
4 sets of 3 means: 3 of the same, or 3 in a sequence(1-2-3, 5-6-7)
That's it, 4 sets of 3 tiles, and then a pair of tiles, it's really very easy.