The special plan (draft) was for the selection of the Nanhui Line (Pudong Hub-Lingang Industrial Park Station).
In November 2019, Zhu Zhisong, Deputy Secretary-General of the Shanghai Municipal Government and Executive Deputy Director of the Management Committee of the Lingang New Area of the Pilot Free Trade Zone, revealed that the Lingang New Area is to be connected to urban Shanghai via Pudong International Airport, Hongqiao International Airport, Shanghai South railway station, as part of an express railway network.
The "Pudong Comprehensive Transportation Hub Special Plan" announced in February 2020 mentioned the Nanhui Line.
The "Three-year Action Plan for Traffic Improvement in the Lingang New Area of China (Shanghai) Pilot Free Trade Zone (2020-2022)" published in March 2020 proposes to accelerate the implementation of the Nanhui Line before 2022.
From April 29 to May 28th, 2021, the Municipal Transportation Commission publicized the special plan (draft) for the selection of the Shanghai Nanhui Line (Pudong Hub ~ Lingang Industrial Park Station).