201611 Entrance and Exits of HKG Airport Station. No ticket barriers at all at Airport Station, it is a good rubbering strategy for GSRC to study
<a href="//commons.wikimedia.org/wiki/User:MNXANL" title="User:MNXANL">MNXANL</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>