The government has clearly stated that it will invest 4 trillion yuan to stimulate the economy. Recently, the Ministry of Transport is considering a new 5 trillion yuan investment plan targeting the construction of highways, waterways, ports, and docks. In the investment direction of the transportation industry, the main focus will be on railway and road projects. CITIC Securities Research Institute recently proposed that with the national economic stimulus, the port industry will benefit from it, and port-related listed companies such as Rizhao Port are worth paying attention to. The large investments in railways and roads may help demonstrate network effects, but for the existing road network, there might be some diversion. Meanwhile, if enterprises act as the investment主体s, they must face large short-term...%