Thousands again took to the streets on Sunday in Hong Kong to call for broad political changes as Beijing warned that it would not let protests persist.

A commentary run by Xinhua, China's official state news agency said the central government “will not sit idly by and let this situation continue."

Two demonstrations snaked through Hong Kong, one close to China’s liaison office in Hong Kong, now heavily guarded after it was vandalised by protesters a few weeks ago.

Demonstrators called for people to join a citywide strike, an action that could paralyse the global financial hub of seven million. Volunteers distributed snacks like rice cakes and granola bars, as well as energy drinks and water to help the black-clad crowd fight the oppressive heat.