Thanks for review, but the idea that somebody would find Hong Kong boring and at the same time, find Nanchang interesting is just

First time I have ever heard this sentiment expressed. I suspect what colored your impression was that you had a Nanchang friend.
Beijing West taxis: the best place to go is the official taxi queue which is underground just as you come out of the platform hallway exit--they can't refuse you. Once out on the street around that station, it's chaos city. So if you want a taxi, commit and get in the queue, even if you have to wait 10-15 minutes as I did a couple of weeks ago (queue moves quickly). And the back (south side) of BJW right now is torn up for some plaza construction, so that's not helping. Eventually the metro will come right to the station. Line 1 is so crowded most times, that trying to navigate it with major luggage is a pain.