A group photo is taken on Aug. 4, 2017 after a signing ceremony of the Strategic Cooperation Framework Agreement to Build Smart City, in Macao, south China. Macao and Alibaba Cloud will work together to upgrade the special administrative region (SAR) into a smart city by applying cloud computing and artificial intelligence (AI), according to an agreement signed on Friday by Macao SAR government and Alibaba Cloud. [Photo / Xinhua]