Photo taken on Sept. 19, 2020 shows the statue of late Cambodian King Father Norodom Sihanouk in Phnom Penh, Cambodia. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Sovannara/Xinhua)

Photo taken on Dec. 19, 2019 shows a view of Phnom Penh, Cambodia. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Sovannara/Xinhua)

A woman feeds doves in front of the Royal Palace in Phnom Penh, Cambodia, on Sept. 19, 2020. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Sovannara/Xinhua)

Photo taken on Nov. 8, 2018 shows a view of central Phnom Penh, Cambodia. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Phearum/Xinhua)

Photo taken on Sept. 19, 2020 shows the statue of late Cambodian King Father Norodom Sihanouk in Phnom Penh, Cambodia. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Sovannara/Xinhua)

Photo taken on Sept. 11, 2019 shows the Wat Phnom historical site surrounded by trees in Phnom Penh, Cambodia. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Sovannara/Xinhua)

Photo taken on Sept. 11, 2019 shows scenery along the Tonle Sap River in Phnom Penh, Cambodia. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Sovannara/Xinhua)

Photo taken on Sept. 20, 2020 shows the Vattanac Capital Tower in Phnom Penh, Cambodia. Cambodia is time-honored for its rich history and representation of traditions. Phnom Penh, capital of Cambodia, lying at the confluence of the Tonle Sap and Mekong river systems, boasts of its traditional buildings and modern skyscrapers. (Photo by Phearum/Xinhua)