QUESTION RE TWOV ELIGIBILITY IN SHANGHAI

Hello!
4 australian passport holders, possible routings as below?

SYD- SHA- HKG
(syd- sha - by air (direct) ; Sha- HKG by cruise)

Alternative Routing;
SYD- HKG- SHA- HKG
(Syd- Sha via HKG by air; Sha- HKG by cruise)

Could you please advise if one or both is eligible for TWOV?
Many thanks
BB