China's central government supports the Hong Kong Special Administrative Region administration's work to maintain stability and security, the Foreign Ministry reiterated Friday.

No external forces are allowed to interfere in Hong Kong affairs, said Hua Chunying, a spokesperson for the ministry.

Hua made the remarks after U.S. President Donald Trump and Secretary of State Michael Pompeo said China should do the "right thing" in dealing with Hong Kong issues.

"China has been doing the right thing and we hope that the U.S. side can do the right things as well," she said.

In a response to a question about China's People's Liberation Army's Hong Kong garrison, Hua stressed the garrison in Hong Kong is performing its duties in accordance with the law since Hong Kong's return to China.

It has become the key to maintaining Hong Kong's long-term prosperity and stability, the spokesperson added.

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"Some people have asked foreign countries to issue travel warnings to Hong Kong, which is an attempt to provoke external forces to intervene in Hong Kong affairs", Hua said when asked about the letters protesters sent to 61 foreign consulates in Hong Kong, calling on foreign countries to issue travel warnings.

"They attempt to put pressure on the central government and HKSAR government," the spokesperson noted.

"We ask these people to look back on history. In the history, those who collude with external forces to harm the country and the people have no good end," she added.