China said today US attempts to harm Chinese interests will be met with firm countermeasures, criticising a US decision to begin ending special treatment for Hong Kong as well as actions against Chinese students and companies.

China's parliament last week voted to move forward with imposing national security legislation on Hong Kong, which US President Donald Trump said on Friday was a tragedy for the people of the city, and which violated China's promise to protect its autonomy.

Trump ordered his administration to begin the process of eliminating special US treatment for Hong Kong to punish China, ranging from...