Aerial photo taken on Dec. 15, 2019 shows domestically made autonomous cargo ship "Jindouyun 0 hao", or No. 0 Jindouyun, sailing on the sea in south China's Guangdong Province. The China's homemade cargo ship witnessed its maiden voyage on Sunday. The ship was initiated by the end of 2017 and delivered this year. (Xinhua/Deng Hua)