WASHINGTON: US President Donald Trump said Thursday he won't give any "advice" to Beijing following signals that the Chinese military is considering intervening after two months of pro-democracy rallies in Hong Kong.

"That's between Hong Kong and... China," Trump said. "They don't need advice."

China's military has released a propaganda video showing a drill of armed troops quelling a protest in Hong Kong, as its commander for the semi-autonomous Chinese city voiced determination to maintain law and order.

Masses of protesters have taken to the streets of the global financial hub to demand more freedoms.