Of course it is. This is a historical document. China Foreign Ministry spokesperson Lu Kang said at a regular press conference that "the Sino-British Joint Declaration, as a historical document, no longer has any practical significance, nor does it have any binding force on the China Central Government's administration of the Hong Kong Special Administrative Region. The British side has no sovereignty, governance or supervision over Hong Kong after the reunification. I hope that the above people will recognize the reality. "