Hong Kong protesters celebrate Thanksgiving

China has warned the US it could take "firm counter-measures" if Washington continues to show support for pro-democracy protesters in Hong Kong.

The warning came after US President Donald Trump signed the Human Rights and Democracy Act into law.

The act mandates an annual review, to check if Hong Kong has enough autonomy to justify special status with the US.

Mr Trump is currently seeking a deal with China, in order to end a trade war between the two countries.