> China said on Friday the joint declaration with Britain over Hong Kong, which laid the blueprint over how the city would be ruled after its return to China in 1997, was a historical document that no longer had any practical significance. … Lu told reporters during a regular briefing on Friday that the document no longer binds China.

https://www.reuters.com/article/us-hongkong-anniversary-chin...

This was all the way back in 2017, my bad.