Ah... the MTR Corporation is trying to get people more physically active, which is probably why some of the newer MTR stations have such long corridors.
If you enter HKU MTR station at The Westwood (Exit C2), there's a stairwell to get down to a very long corridor that takes at least five minutes to walk (because there's a sign on the wall that says so, counting down the minutes depending on how far you've walked).
While we walked down to get to the station (the escalator going down was out of order), at the bottom of the stairs there's a poster that indicates there are 64 steps to get to the top, with the slogan, "Climb steps everyday for good health and happiness".
Since when does climbing stairs lead to happiness?
Is this a new way to enlightenment we haven't heard of before?