Early Monday, in the midst of rush hour traffic, hundreds of black-clad protesters stood in doorways to the local trains, causing major disruption to the entire train network during the morning rush hour. Kravall equipped police use hard methods to stop the manifestations, efforts that were previously videotaped and disseminated. Several activists were arrested.

Forms human chain

Monday was also the first school day of the fall in Hong Kong, and many thought the situation would then return to normal. But instead of the school bench, tens of thousands of young people chose to attend demonstrations instead, writes the South China Morning Post.

Some of them wore a gas mask, helmet and goggles. Others wore their school uniforms and formed a chain outside their schools, shouting "Freedom for Hong Kong, democracy now!"

- I have come here to urge everyone to continue fighting for Hong Kong and show that nothing has returned to normal just because the universities are opening again after the summer break, says a student who simply calls himself "Chan" to Reuters.

The boycott is expected to last until Tuesday and then repeated one day each week.

Warning from Mainland China

Activists have also urged the city's residents to go on strike during the day, but few heard the call. Businesses have been open and people have gone to their jobs as usual.

The call comes after a weekend of violent clashes between activists and police. On Saturday, police used tear gas, water cannons and rubber bullets while activists threw gasoline bombs, among other things.

Late Sunday, Beijing warned that "the end is coming" for the protest movement, via a text published by the state-run Chinese news agency New China.