HONG KONG, Nov. 20 (Xinhua) -- The government of China's Hong Kong Special Administrative Region (HKSAR) on Wednesday expressed deep regret over the U.S. Senate's passage of the so-called Hong Kong Human Rights and Democracy Act of 2019 and another act on Hong Kong.

"The Hong Kong Human Rights and Democracy Act and the other act on Hong Kong are unnecessary and unwarranted. They will also harm the relations and common interests between Hong Kong and the United States," a spokesman for the HKSAR government said in a statement.

The spokesman also reiterated that foreign legislatures should not interfere in any form in the internal affairs of the HKSAR.

He pointed out that the HKSAR has been exercising "Hong Kong people administering Hong Kong" and a high degree of autonomy in strict accordance with the Basic Law of the HKSAR of China, adding that the "one country, two systems" principle has been fully and successfully implemented.

"'One country, two systems' is the best arrangement for maintaining Hong Kong's long-term prosperity and stability and for making Hong Kong a favourable place to live and work in," he stressed, adding the HKSAR government will continue to implement the "one country, two systems" principle resolutely in accordance with the Basic Law.

The spokesman noted that human rights and freedoms in Hong Kong are fully protected by the Hong Kong Bill of Rights Ordinance and other legislation, in addition to the Basic Law, and that the HKSAR government attaches great importance to human rights and freedoms and is determined to safeguard them.

He noted that since early June, more than 700 public demonstrations, processions and public meetings have been staged in Hong Kong, many of which eventually turned into violent illegal activities. "Whenever unlawful assembly or violent action occurs, the police have to take appropriate actions to protect the life and property of the general public, bring offenders to justice and restore social peace," he said.

"The unique status of Hong Kong has all along been widely recognized and respected by the international community," the spokesman said, adding that Hong Kong has therefore established mutually beneficial cooperative relationship with various trade partners in the world, including the United States.

"Any unilateral change of U.S. economic and trade policy towards Hong Kong will create negative impact on the relations between the two sides as well as U.S. own interests," the spokesman warned.