I am a European who has worked for half of my adult life in Asia – in Hong Kong, mainland China, Japan and just short of ten years in Singapore – plus a few years for Asian companies in Europe. Of course, when working in Asia, I also visited other Asian countries often for tourism, as my purchasing power was high.
And I envy you !!
Go! Go now, and ...
I understand your trouble, from what I've read, the work culture may vary a lot on where you're working.
If my sources are correct, the population is mostly of Chinese origin, so you should check how they behave at work.
I've found out they are quite rigid, have a strong hierarchical culture and some delicate behavioural aspects, like being extra careful ...
Here's a couple of additional possibilities I thought of (further to the already excellent answers already posted!)
This is based on my experience in the past with a specific co-worker, in case none of the existing answers seem to address what you feel your co-worker's motivations may be.
Your co-worker may be - for whatever reason - anxious ...