could u tell me the details of Shanghai Hongqiao International Airport (SHA)

Shanghai Hongqiao Airport has two terminal buildings, and it can be reached by subway line 2 and 10. there are shuttle buses from the airport to the city and nearby cities.
there is a Hongqiao Railway Station next to it, operating high-speed trains to/from Shanghai. the 72-hour-visa-free-transit is available at this airport.
you can find more information about the airport at: https://www.travelchinaguide.com/cityguides/shanghai/hongqiao-airport.htm