I am arrive in Shanghai at 3 pm April 15, board a cruise ship April 16,

arrive in Tianjin April 18 then leave Tianjin April 19, arrive in Dalian April 20 and leave Dalian same day at 4 pm to Sakaiminato, Japan. Total less than 144 hours. My question is do I need a China Visa or not.
Is 144 hours exemption cover Dalian, China ?

Thanks !