This document contains certificates, awards, news articles, and references for Chang Cey Wen's work experience at hotels in Pakistan and Sri Lanka between 2002 and 2010, including managing the Beach Luxury Hotel in Karachi from 2008 to 2010 and the Riverina Hotel in Beruwela, Sri Lanka from 2002 to 2008. It highlights his leadership performance through various awards and appreciations from hotel groups, governments, and media publications during his time at those hotels.