You Do Need power plug adapter while traveling from Antigua and Barbuda to Hong Kong.

Here is Why You Need An Adapter

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

Antigua and Barbuda

In Antigua and Barbuda, 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