< 2 Photos>
I must declare this is not my photo; it is a recent photo taken from the South China Morning Post (SCMP).
I would like to show it to contrast it with a photo taken by me on a good day where you can see forever.
The first photo shows what you can see ( which is not much) earlier this month when there was heavy fog.
Only when both pictures are put together, readers can appreciate what the fog can do!