You Do Need power plug adapter while traveling from Sint Maarten to Hong Kong.

Here is Why You Need An Adapter

The outlet and plug type used in Hong Kong is G and in Sint Maarten are A and B. This is how they look like.

Sint Maarten

In Sint Maarten, outlets of type A and B are in use.

Type A

Type B

Hong Kong

In Hong Kong, outlets of type G are in use.

Type G