The warning comes on the heels of reports that lawmakers in mainland China had approved a contentious security law which will allow authorities to crack down on subversion, secession, terrorism or foreign collusion in the semi-autonomous territory. The law met with opposition in Hong Kong and several Western countries, including the United States.
China has threatened to retaliate following the United States' decision to strip Hong Kong of its special status amid a spike in tensions over a new security law.
Chinese Foreign Ministry spokesman Zhao Lijian did not elaborate on the possible steps Beijing would take in making the announcement on Tuesday.
The Hong Kong-based newspaper SCMP and broadcaster RTHK report that Chinese lawmakers have unanimously approved the law, which China says is meant to safeguard national security, but many in Hong Kong fear will encroach on the territory's unique freedoms.
The political party Demosisto, which has advocated for self-determination in Hong Kong, disbanded shortly after the reports emerged.
The law was passed a year after the start of mass anti-government protests in the Asian financial hub, which has a separate legal framework and governance from mainland China under the “one country, two systems” principle, an arrangement that is set to expire by 2047.
The security law, which criminalises secession, subversion, terrorism and collusion with foreign…
