HK MTR Hong Kong <a href="https://en.wikipedia.org/wiki/Tsuen_Wan_Line" class="extiw" title="en:Tsuen Wan Line">en:Tsuen Wan Line</a> train window in July 2021
<a href="//commons.wikimedia.org/wiki/User:Samgywat_6_Laumxiwoo" title="User:Samgywat 6 Laumxiwoo">Samgywat 6 Laumxiwoo</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>