LAX-LHR you need to read up on the terms of the agreement between Britain and China regarding the transfer of power.
Hong Kong will remain a Special Administrative Region until July 1 2047. Whilst there are doubtless flaws in the agreement and many in HK wish for greater democracy, the system is working and it is in China's interest to maintain the current system. Things can change but there are no signs that the current Chinese leadership wishes to change the agreement.