You Do Need power plug adapter while traveling from British Virgin Islands to Hong Kong.

Here is Why You Need An Adapter

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

British Virgin Islands

In British Virgin Islands, 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