Do i need 24hr twov if just transiting airside same terminal?

I have flight Auckland - London transiting Shanghai Pudong airport for 7 hours. My baggage is checked right through as it is all via China Eastern airline. Same terminal 1.

If i intend just to stay airside in Pudong Terminal 1 airport the entire 7 hours and not leave the airport, do i still need to go fill in arrival card and get a 24hr twov? or i don't even need to apply twov at all?