<p>Although China, Taiwan, and Hong Kong share aircraft registration numbers that start with B (as both mainland China and Taiwan claim to be the rightful Chinese government, and Hong Kong is now a Chinese special administrative region), mainland Chinese registrations have four numeric digits, while Taiwan registrations have five digits and Hong Kong has three letters.
</p><p>For the record, China Airlines is from Taiwan.
</p>
B-18706, Boeing 747-400F
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/56619626@N05">skinnylawyer</a> from Los Angeles, California, USA
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/skinnylawyer/6039498739/">China Airlines Cargo</a>