I don't understand the division of network between HX 320's and HK Express.  Here is a HX example soaking up the sun on a parking bay in the middle of the airfield.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/130275500@N02">G B_NZ</a>
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/27851854704/">HongKong Airlines A320 B-LPM at HKG</a>