Take Taoyuan MRT to A18 (Taoyuan HSR Station), check timetable here.
Take THSR to Yunlin Station, check timetable here.
Go to Exit 3 and find Station 2-4 to Huwei, take bus 7102 and 7120 to conference venue (National Formosa University), ticket price is around NTD 22-27.
Take MRT from BR13- Songshan Airport to R10-Taipei Main Station.
Take Taxi to THSR Taichung Station, it will take around 25-30 minutes.
Check traffic information here.