China on Thursday deplored and strongly opposed the passing of the so-called Hong Kong Human Rights and Democracy Act of 2019 by US congressional committees, urging the United States to stop interference in Hong Kong affairs.

The Act confuses right and wrong in total disregard of the facts, brazenly bolsters up violent radicals in Hong Kong and grossly interferes in China's internal affairs, Foreign Ministry spokesperson Geng Shuang said in a statement released Thursday morning.

Since the return of Hong Kong to the motherland in 1997, policies including "one country, two systems," "Hong Kong people governing Hong Kong" and a high degree of autonomy have been earnestly carried out, and Hong Kong residents' rights and freedom have been fully guaranteed, Geng said.

But in the past three months, the situation in Hong Kong, initially from the fallout over revisions to the Fugitive Offenders Ordinance, has gone completely awry as radical forces and violent activists wantonly disturbed public order, destroyed public facilities and assaulted and injured police officers with the support and indulgence of external forces and the anti-China disruptors in Hong Kong.

"All these acts went far beyond normal peaceful demonstrations and assemblies, trampled on social morality, violated the baseline of the rule of law and challenged the bottom line of the 'one country, two systems' principle," said Geng in the statement.

He said it has become a broad consensus for all walks of life in Hong Kong to stop the violence and restore order.

The central government of China firmly supports the government of the Hong Kong Special Administrative Region (HKSAR), the Hong Kong police and the HKSAR judiciary in carrying out their duties in accordance with the law, said the spokesperson.

Geng said the US Senate Committee on Foreign Relations and the US House Committee on Foreign Affairs persisted in reviewing and approving the Hong Kong-related act in disregard of the appeals of all sectors of Hong Kong society and basic norms of international relations, wantonly backing radical forces and violent activists in Hong Kong.

"Such a move constitutes gross interference in China's internal affairs and fully exposes some US Congress members' vicious intention to send Hong Kong into chaos and contain China's development," he said.

Geng said it is in line with the interests of all parties including the United States that Hong Kong maintains prosperity and stability as there are more than 80,000 US citizens living in Hong Kong together with over 1,300 US companies and considerable US investment.

"The approval of the act by US congressional committees can only embolden radicals and violent activists to further destabilize Hong Kong, which will jeopardize the interests of both China and the United States," Geng said.

He warned that no one should underestimate China's determination to safeguard its national sovereignty, safety and development interests, implement the "one country, two systems" policy and safeguard Hong Kong's prosperity and stability.

"Any US move that undermines China's interests will be met with our vigorous response," Geng said.

China strongly urges some US Congress members to correctly understand the situation, immediately stop pushing the review of the Hong Kong-related act and stop meddling in Hong Kong affairs and interfering in China's internal affairs to avoid further damage to China-US relations, said the spokesperson.