So I was just sitting there daydreaming and suddenly got curious to why the greats in LOCH are announced in this particular order when they are brought up: East HYS, West OYF, South Yideng, North H7.
From what I gather, they are equivalent in martial arts so it can't be based on that. This may have been mentioned in the novel, but the only conclusion I came up with is that they sound better?