Cambodia’s Prime Minister Samdech Akka Moha Sena Padei Techo Hun Sen addresses the participants while he was presiding over the celebration of National Clean City Day 2019 held here this morning in conjunction with the 3rd Awarding Ceremony of Samdech Techo Hun Sen Prime Minister Eco-Business Awards for Tourism, the Awarding Ceremony of the Best Countdown City of the Year, and the 1st Awarding Ceremony of Cambodia Public Toilets.