Dalian City, Liaoning Province, surrounded by sea on three sides and with sea area of 30.1 thousand square kilometers and coastline of 2,221 kilometers, is abundant in marine resources and enjoys well-conditioned marine industries. Dalian, as an strategic node of Belt and Road Initiative on the sea, international shipping center of Northeast Asia, and the opening window of Northeast China to the outside world, is the most important comprehensive foreign trade port of Northeast China.