I associate culture shock with foreign countries.
We experience culture shock when we visit Japan and have to navigate our way through the complicated rituals of gift-giving and manners. We experience culture shock when we go to the United States and the most popular Chinese dishes seem to be 'General Tso's Chicken' or 'Grandmother Chicken'.
I never expected to experience culture shock in Hong Kong.
The fact that I consider the 10-person elevators in my Hong Kong apartment building tiny shows that I have got used to the US.
'Barely four people would fit in here!' I exclaimed to my parents, as I thought of the residents of Philadelphia.
Everything - from French fries and soft drinks to trucks and buildings - is super-sized in America.
I am generally perceived as small or slightly below average in terms of physique in the US, but I find myself on the large side of the scale when compared to my Hong Kong peers.