It is expected to be in mid-March 2023. The site speculation of Shanghai Rail Transit Line 19 explains that the actual location of Shanghai Hongkou Line 19 is subject to the final announced plan, which is expected to be announced in mid-March 2023. Shanghai, referred to as "Hu", also known as "Shen", is China's largest economic center and an important international financial center city. It is one of the first coastal open cities. Shanghai is located in eastern China, at the estuary of the Yangtze River.