Armenian Prime Minister Nikol Pashinyan delivers a speech at the opening ceremony of the Conference on Dialogue of Asian Civilizations (CDAC) at the China National Convention Center in Beijing, capital of China, May 15, 2019. (Xinhua/Ju Huanzong)

Cambodian King Norodom Sihamoni delivers a speech at the opening ceremony of the Conference on Dialogue of Asian Civilizations (CDAC) at the China National Convention Center in Beijing, capital of China, May 15, 2019. (Xinhua/Ju Huanzong)

UNESCO Director-General Audrey Azoulay delivers a speech at the opening ceremony of the Conference on Dialogue of Asian Civilizations (CDAC) at the China National Convention Center in Beijing, capital of China, May 15, 2019. (Xinhua/Ju Huanzong)

Sri Lankan President Maithripala Sirisena delivers a speech at the opening ceremony of the Conference on Dialogue of Asian Civilizations (CDAC) at the China National Convention Center in Beijing, capital of China, May 15, 2019. (Xinhua/Ju Huanzong)

Singaporean President Halimah Yacob delivers a speech at the opening ceremony of the Conference on Dialogue of Asian Civilizations (CDAC) at the China National Convention Center in Beijing, capital of China, May 15, 2019. (Xinhua/Ju Huanzong)

Greek President Prokopis Pavlopoulos delivers a speech at the opening ceremony of the Conference on Dialogue of Asian Civilizations (CDAC) at the China National Convention Center in Beijing, capital of China, May 15, 2019. (Xinhua/Ju Huanzong)