Protesters remained on the streets on Monday evening, with many camped outside government buildings
Some protesters covered their faces with plastic wrap and goggles as an anti-tear-gas measure Earlier, police clashed with protesters attempting to block roads in central Hong Kong
Schools in the Wan Chai, Central and Western districts were closed on Monday and will remain shut on Tuesday, according to the Hong Kong Education Bureau.
The city remains heavily disrupted, with several major thoroughfares blocked.
One man said protesters were growing more confident. "Police don't have enough officers to close down the districts where there are protests," Ivan Yeung, 27, told AFP news agency.
Hong Kong's chief executive reassured the public that rumours the Chinese army might intervene were untrue.
"I hope the public will keep calm. Don't be misled by the rumours," CY Leung said.
China, which stations a garrison of the People's Liberation Army (PLA) in Hong Kong, said it was confident the city's administration could handle the protests.