China threatens 'countermeasures' after Trump signs Hong Kong bill

China warned that it was ready to take "firm countermeasures" against the US

Hong Kong Protests Policemen from Explosive Ordnance Disposal (EOD) unit search for dangerous materials at bio laboratory inside the Hong Kong Polytechnic University campus in Hong Kong | AP

China warned on Thursday that it was ready to take "firm countermeasures" against the United States after President Donald Trump signed a law supporting pro-democracy protesters in Hong Kong.

"The nature of this is extremely abominable, and harbours absolutely sinister intentions," the foreign ministry said in a statement, without specifying what measures Beijing might take.