do I qualify for the 144 hour visa free transit in Shanghai?

I am arriving in Shanghai on Sept 29 on a cruise ship. I plan to visit only Shanghai, Suzhou and Hangzhou. I will be leaving from Shanghai on Oct 4 and flying directly home to Canada. Will I qualify for 144 hour free transit? Someone told me that I wouldn't qualify because on October 4 I'm flying home to Canada and to qualify I would have to be flying to some other country rather than directly home.
Please let me know.