It is expected to be in the middle of March 2023. The introduction of Shanghai Rail Transit 19 Line shows that the actual location of Shanghai Hongkou Line 19 Line is subject to the final publicity plan, which is expected to be in mid-March 2023. Shanghai, referred to as "Shanghai" or "Shen" for short, is the largest economic center and an important international financial center city in China. It is one of the first coastal open cities. Shanghai is located in the east of China, at the mouth of the Yangtze River.