Manchester to SHA ( no stopover with Cathay )for 3 days, Then back to HKG for 3 days and back to MAN

Hi,

Does it qualify for 72 hours transit or 144 hrs?

With Cathay pacific, from Manchester UK to Shanghai via HKG ( no stopover ). Stay in Shanghai for 3 days then back to HKG for 3days. Then to Manchester UK.
Regards