I am a US citizen taking a cruise that starts in Hong Kong and visits Shanghai. Do we need a Visa?

My cruise starts with 1 and half days in Hong Kong with the ship as our hotel. We than travel to Taipei for 2 days and then stop in Shanghai fro 1 day. The rest of our cruise is in Japan and we fly home from Tokyo. Do we qualify for the 144 hours exemption? As we are on a cruise and only have limited time in China are our passports all that we will need for this cruise?