Shanghai train statation to Pudong International Airport

There are 3 main railway stations in Shanghai:
Shanghai railway station(上海站 shang hai zhan)/
Shanghai Hongqiao railway station(上海虹桥站 shang hai hong qiao zhan) /
and south Shanghai railway station(上海南站 shang hai nan zhan).
Which one?
All you can to Pudong Internatonal Airport by metro

If Shanghai railway station:metro line 4 (inner ring) to century Avenue station(世纪大道 shi ji da dao),then turn metro line 2 to Guanglan Rd.(广兰路 guang lan lu), then also turn metro line 2 to Pudong airport.(PVG 浦东国际机场 pu dong guo ji ji chang)

If Shanghai Hongqiao railway station:it's easy, metro line 2 to Guanglan Rd.(广兰路 guang lan lu), then also turn metro line 2 to Pudong airport.(PVG 浦东国际机场 pu dong guo ji ji chang)

If south Shanghai railway station:metro line 3 to people square station(人民广场 ren min guang chang), then turn metro line 2 to Pudong airport.(PVG 浦东国际机场 pu dong guo ji ji chang)