Hong Kong Chief Executive Carrie Lam attends a news conference in Hong Kong, China, June 18, 2019. Hong Kong leader Carrie Lam on Tuesday signalled the end of a controversial extradition bill that she promoted and then postponed after some of the most violent protests since the former British colony returned to Chinese rule in 1997. REUTERS/Tyrone Siu

Hong Kong Chief Executive Carrie Lam arrives for a news conference in Hong Kong, China, June 18, 2019. In a closely watched press conference, Lam apologised for the turmoil but refused to say the bill would be "withdrawn", only that it wouldn't be re-introduced during her time in office if public fears persist. REUTERS/Tyrone Siu

Hong Kong Chief Executive Carrie Lam attends a news conference in Hong Kong, China, June 18, 2019. This was the strongest indicator yet that the government was effectively shelving legislation that would allow people to be extradited to mainland China to face trial, even if it fell short of protester demands for the government to scrap the bill altogether. REUTERS/Tyrone Siu

Hong Kong Chief Executive Carrie Lam attends a news conference in Hong Kong, China, June 18, 2019. "Because this bill over the past few months has caused so much anxiety, and worries and differences in opinion, I will not, this is an undertaking, I will not proceed again with this legislative exercise if these fears and anxieties cannot be adequately addressed," Lam told reporters. REUTERS/Tyrone Siu

Hong Kong Chief Executive Carrie Lam attends a news conference in Hong Kong, China, June 18, 2019. Lam, appearing both contrite and defiant, used much of the same language as a previous press conference on Saturday when she announced a postponement of the bill. A day later, about two million people spilled on to the streets, many demanding that she step down. REUTERS/Tyrone Siu

Hong Kong Chief Executive Carrie Lam leaves after attending a news conference in Hong Kong, China, June 18, 2019. Lam, asked repeatedly whether she would quit, refused to do so, saying there remained important work ahead in the next three years, which would bring her to the end of her current five-year term of office. REUTERS/Tyrone Siu