Troupers perform Tibetan Opera at Dzongyab Lukhang Park in Lhasa, capital of southwest China's Tibet Autonomous Region, Aug. 16, 2015. China will hold the Conference on Dialogue of Asian Civilizations starting from May 15. Under the theme of "exchanges and mutual learning among Asian civilizations and a community with a shared future," the conference includes an opening ceremony and sub-forums. (Xinhua/Purbu Zhaxi)