Secretary for Justice Paul Lam on Monday reassured journalists that they have nothing to worry about when reporting any criticism of Hong Kong, while hinting at "practical plans" prepared to counter possible sanctions over the home-grown national security legislation.

"It is very important to report on unfriendly remarks made about Hong Kong, so that we know about ourselves and our enemies. We have to know what those who are not friendly to us have been doing and saying," Lam told a radio programme.

"[People doing] genuine journalistic work absolutely do not need to worry. Instead, we very much encourage press freedom."

The minister said the administration is ready to face any "unfriendly behaviour" in relation to the new security law.

"We are mentally prepared, and we have devised some practical plans in response," he said. "We have sufficient defensive capabilities. Part of the new [security] law helps enrich our toolbox to deal with these situations."

Lam did not elaborate further on the plans, citing a complicated geopolitical situation.

Security minister Chris Tang, for his part, brushed aside concerns of further sanctions or actions taken against the SAR, such as closing the city's trade offices abroad.

"Any attempts to close the trade offices would only harm the interests of those particular countries. The offices are meant to facilitate trade and foster exchanges in trade and culture. It would be foolish for them to take such an action," Tang said.

"As for sanctions, I am an example here in the flesh. I have been sanctioned for a long while, and I'm still in one piece."