Photo taken on July 27, 2019 shows MOZI 2 solar-powered aircraft flying in the sky. After two years of research and development, the "MOZI 2" solar-powered unmanned aircraft, with independent intellectual property rights, successfully made its maiden flight at Moganshan airport in Deqing, east China's Zhejiang Province on July 27, according to its producer OXAI Aircraft Co., Ltd. on Tuesday. (Oxai Aircraft/Handout via Xinhua)