do i need a china visa? hi. i am a korean. also have korea passport.

my flight schedule have
korea => shanghai(SHA, stay 2 days) => PVG => paris(france, stay 4days) => KOREA.

i will arrive SHA on 3 OCT, flight out in PVG on 5 OCT total stay time is 48 hours.

i know visa-free if transfer in SH during 72 hours

IF arrival and departure airport is different. do i need a China visa? or do not i need a China visa?

thanks.