whats the best way to get from Shanghai international airport to long distance bus station 1662

If it is Pudong International Airport, you can take subway line 2 to People's Square Station. Then transfer to subway line 1 to SH Railway Station, Exit 4. After arriving, just walk to the bus station directly.
If it is Hongqiao International Airport, take subway line 10 to Hongqiao Road Station. Then transfer to subway line 3 to the railway station, Exit 4. After arriving, walk to the destination directly.

Thanks for the info