Question: Which city, Suihua or Gaoyou, is a county-level city under the administration of Yangzhou, Jiangsu province, China, located in the Yangtze River Delta?
Sentence (from "Gaoyou Lake"): Gaoyou Lake is now part of the Huai River system as the Huai River flows south through Gaoyou Lake on its way to the Yangtze River and the Pacific.
Relevant evidence: No