This is basically their “Constitution”.
Article 1
The Hong Kong Special Administrative Region is an inalienable part of the People’s Republic of China.
Article 2
The National People’s Congress authorizes the Hong Kong Special Administrative Region to exercise a high degree of autonomy and enjoy executive, legislative and independent judicial power, including that of final adjudication, in accordance with the provisions of this Law.
Article 3
The executive authorities and legislature of the Hong Kong Special Administrative Region shall be composed of permanent residents of Hong Kong in accordance with the relevant provisions of this Law.
Article 4
The Hong Kong Special Administrative Region shall safeguard the rights and freedoms of the residents of the Hong Kong Special Administrative Region and of other persons in the Region in accordance with law.
Article 5
The socialist system and policies shall not be practised in the Hong Kong Special Administrative Region, and the previous capitalist system and way of life shall remain unchanged for 50 years.
Article 6
The Hong Kong Special Administrative Region shall protect the right of private ownership of property in accordance with law.
Article 7
The land and natural resources within the Hong Kong Special Administrative Region shall be State property. The Government of the Hong Kong Special Administrative Region shall be responsible for their management, use and development and for their lease or grant to individuals, legal persons or organizations for use or development. The revenues derived therefrom shall be exclusively at the disposal of the government of the Region.
Article 8
The laws previously in force in Hong Kong, that is, the common law, rules of equity, ordinances, subordinate legislation and customary law shall be maintained, except for any that contravene this Law, and subject to any amendment by the legislature of the Hong Kong Special Administrative Region.
Article 9
In addition to the Chinese language, English may also be used as an official language by the executive authorities, legislature and judiciary of the Hong Kong Special Administrative Region.
Article 10
Apart from displaying the national flag and national emblem of the People’s Republic of China, the Hong Kong Special Administrative Region may also use a regional flag and regional emblem.
The regional flag of the Hong Kong Special Administrative Region is a red flag with a bauhinia highlighted by five star-tipped stamens.
The regional emblem of the Hong Kong Special Administrative Region is a bauhinia in the centre highlighted by five star-tipped stamens and encircled by the words “Hong Kong Special Administrative Region of the People’s Republic of China” in Chinese and " HONG KONG" in English.
Article 11
In accordance with Article 31 of the Constitution of the People’s Republic of China, the systems and policies practised in the Hong Kong Special Administrative Region, including the social and economic systems, the system for safeguarding the fundamental rights and freedoms of its residents, the executive, legislative and judicial systems, and the relevant policies, shall be based on the provisions of this Law.
No law enacted by the legislature of the Hong Kong Special Administrative Region shall contravene this Law.
Article 105
The Hong Kong Special Administrative Region shall, in accordance with law, protect the right of individuals and legal persons to the acquisition, use, disposal and inheritance of property and their right to compensation for lawful deprivation of their property.
Such compensation shall correspond to the real value of the property concerned at the time and shall be freely convertible and paid without undue delay.
The ownership of enterprises and the investments from outside the Region shall be protected by law.
Article 111
The Hong Kong dollar, as the legal tender in the Hong Kong Special Administrative Region, shall continue to circulate.
The authority to issue Hong Kong currency shall be vested in the Government of the Hong Kong Special Administrative Region. The issue of Hong Kong currency must be backed by a 100 per cent reserve fund. The system regarding the issue of Hong Kong currency and the reserve fund system shall be prescribed by law.
The Government of the Hong Kong Special Administrative Region may authorize designated banks to issue or continue to issue Hong Kong currency under statutory authority, after satisfying itself that any issue of currency will be soundly based and that the arrangements for such issue are consistent with the object of maintaining the stability of the currency.
Article 112
No foreign exchange control policies shall be applied in the Hong Kong Special Administrative Region. The Hong Kong dollar shall be freely convertible. Markets for foreign exchange, gold, securities, futures and the like shall continue.
The Government of the Hong Kong Special Administrative Region shall safeguard the free flow of capital within, into and out of the Region.
Just a snippet.