Hong Kong's metro operator had opened all stations in the morning for the first time in a week ahead of another round of anti-government protests.
Hundreds of mask-wearing pro-democracy protesters marched through Hong Kong's central business district at lunchtime on Friday, occupying a main thoroughfare and disrupting traffic as the city braced for another weekend of turmoil.
Chanting calls for their core demands and denouncing what they see as police brutality, the crowd peacefully occupied streets in the financial district, home to some of the world's most expensive real estate, before dispersing.
Hong Kong's metro operator had opened all stations in the morning for the first time in a week ahead of another round of anti-government protests, while the city's legislature began its first session since protesters stormed the building in July.
The protests have plunged the city into its worst crisis since it returned from British to Chinese rule in 1997, posing the biggest popular challenge to Chinese President Xi Jinping since he came to power in 2012.
What began as opposition to a now-withdrawn extradition bill has evolved into a pro-democracy movement fanned by fears that China is stifling Hong Kong's freedoms guaranteed under a "one country, two systems" formula introduced with the 1997 handover.
China denies the accusations and says foreign countries, including Britain and the United States, are fomenting unrest.
Metro operator MTR Corp, whose network carries about 5 million passengers a day, said all lines would shut at 10 p.m. on Friday, more than 2 hours earlier than usual so more repairs could be carried out after protesters torched or trashed stations across the city.
Many stores and businesses have had to shut early due to metro closures, putting another burden on the city's faltering economy as it faces its first recession in a decade.
Protesters have targeted the MTR because it has been blamed for closing stations at the government's behest to contain demonstrations.
The normally efficient system shut down completely last Friday following arson attacks and has operated only partially since then.
Lam introduced the emergency laws, including the ban on face masks last week in an effort to quell unrest. But the ban sparked some of the worst violence since protests started.
The government said it would not bring in any other emergency measures.
But several demonstrations are planned across the city on Friday and through the weekend, when more people have been coming out to vent their opposition over the weeks.
Several major conferences and other events have been called off because of the protests with the latest being an annual swimming race in the city's famed harbour.
Property developer New World Development Company Limited said it was cancelling the October 27 competition because of the "social situation".
The protest movement still appears to have a broad base of support despite the violence and vandalism carried out by small groups of front-line protesters.
Residents, particularly those in their 20s and 30s, are calling for the protection of civil liberties. Many young people are also angry about the city's hugely expensive property, widening inequality and poor job prospects.
More than 2,300 people have been arrested since the protests began to snowball in June, with many of them below the age of 16, authorities said.
Lam is due to deliver the city's annual policy address on October 16 which traditionally contains sweeteners and support for business and investment.
She has said that due to the unrest her address would not be as "elaborate" or "comprehensive" as normal.
Pro-democracy lawmakers on Friday reiterated calls for authorities to address the protesters' "five demands" which include universal suffrage and an independent inquiry into their complaints of excessive force by the police.
Bernard Chan, the convenor of Hong Kong's executive council - the lead advisory body to the chief executive - wrote in an opinion piece in the South China Morning Post on Friday that Lam's policy address would include responses to address the discontent.
Chan said the Independent Police Complaints Council should be allowed to do its own investigation into the controversy over areas such as police procedures and held out the option of an independent inquiry later.