what is hong kong sar china 
hong kong is the premier financial and business center in china and a regional financial leader hong kong is one of china s special administrative regions sars a sar is a relatively autonomous region within the people s republic of china that maintains separate legal administrative and judicial systems from the rest of the country understanding hong kong sar chinahong kong is a special administrative region sar that exists as part of the people s republic of china under the one country two systems doctrine negotiated in the sino british joint declaration negotiated and signed in 1984 but taking effect in 1997 1the one country two systems doctrine stipulated that the people s republic of china s socialist system would not be practiced in hong kong and hong kong would maintain its political and economic quasi independence for 50 years after the transfer of sovereignty until 2047 1