China <a href="https://en.wikipedia.org/wiki/High-speed_rail_in_China" id="mwAWA" rel="mw:WikiLink" title="High-speed rail in China">opens</a> the <a href="https://en.wikipedia.org/wiki/List_of_high-speed_railway_lines" id="mwAWE" rel="mw:WikiLink" title="List of high-speed railway lines">world's longest</a> high-speed <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Beijing–Guangzhou–Shenzhen–Hong_Kong_High-Speed_Railway" id="mwAWI" rel="mw:WikiLink" title="Beijing–Guangzhou–Shenzhen–Hong Kong High-Speed Railway">rail route</a>, which links <a href="https://en.wikipedia.org/wiki/Beijing" id="mwAWM" rel="mw:WikiLink" title="Beijing">Beijing</a> and <a href="https://en.wikipedia.org/wiki/Guangzhou" id="mwAWQ" rel="mw:WikiLink" title="Guangzhou">Guangzhou</a>.