We are US citizens traveling on a Princess Cruise in Sept. We will enter QINGDAO, CHINA on Oct 03, return to the ship and cruise to Dalian, China and enter there on Oct.5. We return to the ship and cruise to Beijing, entering on Sept. 6. We will stay in Beijing one night at a hotel, fly to Xian and stay in a hotel there for 2 nights. We will then fly to Shanghai on Oct.8 and reboard the ship that evening. We will visit other countries and then enter Hong Kong 13 and leave on Oct. 14. I understand there is no visa requirement for Hong Kong for US citizens. What type of visa do we need? Thank You, Lynn Stanleigh