Traveling 72-hours or 144-hours Visa free travel from Sweden

Hi,
my family is going to China and Hongkong for vacation and have a question regarding what we need to do
regarding Visa or not.
We are traveling Stockholm-Copenhagen-Beijing-Hongkong-Bejing-Copenhagen-Stockholm
We will arrive in Beijing at 11:55 on Saturday 26th of October we will stay in Beijing and visit The Grate Wall and Forbidden City

We will leave Monday 28th of October for Hongkong with Air China for a few days

We will tarvel from Hongkong on Sunday 3d of November to Beijing for Transit to Copenhagen via Stockholm.


Can we go with the 72- or 144-hour Visa free travel or do we need to get a Visa.


Thank you in advance!