Can I use the 144 hour free transit visa

Dear all,

According to information researched regarding the 144 hour free transit, validity is from 27/08/2017 (00:00) to 01/09/2017 (23:59). However, as my trip incorporates a cruise, am I correct in assuming this free transit can be applied twice.

26/08/2017 - Arriving Pu Dong (PVG) at 07:55 (from UK)
26/08/2017 - 28/08/2017 - Staying in Shanghai downtown
28/08/2017 - Cruise - Sailing Itinerary below:
Date PORT
28-Aug Baoshan (Shanghai), China
29-Aug Jeju, Republic Of Korea (South Korea)
30-Aug Fukuoka, Japan
31-Aug Cruising Cruising
01-Sep Baoshan (Shanghai), China

01/09/2017 Stay in Pu Dong
02/09/2017 - Depart Pu Dong at 00:40 for UK
Thanks for your response
Vigs