Arriving Pudong - Departing by Cruise Ship

My family will fly to Pudong Airport from San Francisco (Non-stop) arriving January 2, 2019 at 6:30pm. We will board the Princess Cruise Ship on January 5, 2019 at 2:00pm for the 6:00pm sailing to Nagasaki, Japan... No other China mainland ports will be visited... On January 11 the ship will visit Hong Kong from 7am - 10pm. The cruise ends on January 19 in Singapore.

Are we eligible for the 144 hour (or even 72 hour) twov
exemption?