I have to change airports, do I need a travel visa?

Hello, I will be travelling from Canada to South Korea and my layover is in Shanghai for 13 hours. However, I am arriving at Pudong (PVG) airport in the evening and have to stay in a hotel overnight, and my connecting flight leaves from Hongqiao (SHA) airport the following morning? Do I need to apply for a visa to travel from one airport to the other?