The Japanese envoy ships left the city of Yangzhou, but the first ship that Kiyokawa and Nakamaro boarded was caught in a head wind and was drifted to the city of Huanzhou in the south of Tang (present-day Vietnam).
遣唐船は楊州を出航したが、清河と仲麻呂の乗る第一船は逆風に遭い唐南方の驩州（かんしゅう）（ベトナム）に漂着。