On 15 July 2021, H.E. Ambassador Hok Sophea, together with other diplomats based in Brunei Darussalam, attended the 75th Royal Birthday of His Majesty Hassanal Bokiah at the Istana Nurul Iman in Bandar Seri Begawan. On behalf of the Royal Embassy of Cambodia in Brunei Darussalam, H.E. Ambassador Hok Sophea wished to extend to His Majesty longevity, good health in order to guide Brunei toward more progress and prosperity and also contribute to building ASEAN region a progressive, peaceful and prosperous.