AllNews'Four-colour Warning System' - 1 News Result(s)Beijing's First Ever Red Alert Expires TodayWorld News | Agence France-Presse | Thursday December 10, 2015 Beijing's first ever red alert for smog expired today, as blue skies and sunshine replaced the thick haze that covered the city for days. www.ndtv.com'Four-colour Warning System' - 1 News Result(s)Beijing's First Ever Red Alert Expires TodayWorld News | Agence France-Presse | Thursday December 10, 2015 Beijing's first ever red alert for smog expired today, as blue skies and sunshine replaced the thick haze that covered the city for days. www.ndtv.comYour search did not match any documentsA few suggestionsMake sure all words are spelled correctlyTry different keywordsTry more general keywordsCheck the NDTV Archives:https://archives.ndtv.com