Let's examine this shall we:
[*]avoid using A/C when and where you can
Thermal Inertia - it takes more energy to constantly cool your apt back down again, than it does to leave the a/c on and keep the apt at a constant temp
[*]try walking or biking when and where you can
Sure great in the winter, but when its 35 degrees and 98% humidity...and then walk into an office where some tree-huggin numbnut thinks 25.5 is cold enough to cool you down...next
[*]avoid taking taxis when you can.[*]avoid taking buses and minibuses, especially those that run in parallel with the rail lines and those that run diesel.
So let me get this...don't take taxis, buses or minibuses...riiiiiiiiight, how bout we all just teleport. Rail lines only go to fixed points junior, all the other options are flexible, and you may not have noticed but HK is a big place, kinda hard to walk from Aberdeen to Lowu. How about giving some practical advice instead of spouting nonsense.
[*]bitch to the bus drivers that keep their buses too cool in summer.
The bus lines, one of them anyway, ran a trial on select buses with the temp set at 25.5...and complaints skyrocketed!!! See my point above, that temp is just not cold enough to cool you down when its melting point outside.
Now, if we can convince those knuckle-dragging morons who control our dress code policy, and convince them that formal jacket and tie is NOT in anyway shape or form appropriate for this climate, then maybe we can start making some logical steps forward. You can still be professional in smart casual, yet the stuffy old guard here, needs a kick in the ass to drag them kicking and screaming into the present.