__________
Hong Kong:|

Difficulty: 3/5
Time to beat: 0'22''00 (Taizo)
              0'23''00 (Susumu)
              0'23''00 (Anna)
              0'25''00 (Puchi)
              0'25''00 (Holinger-Z)
Bonus Miles: Clear Bonus: 300 m

Reverse difficulty: 5/5
Reverse time to beat: 0'16''00 (Taizo)
                      0'17''00 (Susumu)
                      0'17''00 (Anna)
                      0'19''00 (Puchi)
                      0'19''00 (Holinger-Z)
Bonus Miles: Clear Bonus: 600 m

When trying to beat the normal version of Hong Kong even inexperienced 
players shouldn't have too much of a problem but figuring out the right way 
to beat the reverse course time can be for anybody.
First move one square to the right and drill down until standing next to the 
two-piece blue block. Destroy it as well as the yellow block left of it (not 
the one beneath it) and quickly drill down until you've destroyed the single 
red block (also destroy the yellow block to your right to speed up the next 
section a bit). This way the first clock you just seemed to pass up on falls 
directly into your arms without losing any time waiting for the X-blocks to 
fall prey to a chain-reaction.
Now, of course, pick up the second clock, too.
From where you picked up the latter one you should drill straight down and 
destroy the huge blue block to your left instead of the huge yellow block 
(which can easily happen accidentally) and nab the third clock.
Now drill down until you're left of the next guarded goodie.
Move right under the big X-block covering the clock, destroy all blocks that 
support it and once again drill deeper into the level right beneath the clock 
so you catch it without wasting any precious time. 
Next work your way down towards the next clock so you can pick it up coming 
from the right, move left, down, right, down and grab the last clock also by 
coming from the right and from there just try to drill to the exit as quickly 
as possible.