Participants pose for a group photo during the 4th Meeting of Governors/Mayors of the Capitals of Association of Southeast Asian Nations (ASEAN) in Vientiane, capital of Laos, Nov. 15, 2016. Enhancing liveability within the major urban areas of Southeast Asia was on the agenda as civic leaders of some ten ASEAN capitals met in Laos Tuesday. (Xinhua/Liu Ailun)