SHANGHAI, bắc kinh June 28 (Reuters) - China's lawmakers have reviewed a draft of the national security bill for Hong Kong during a meeting held by the standing committee of the National People's Congress (NPC), state media Xinhua reported on Sunday.

In the meeting, Shen Chunyao, bắc kinh director of the Legislative Affairs Commission of the NPC's standing committee, du lịch bắc kinh presented a report on the bill, Xinhua said.

The NPC's Standing Committee usually meets every two months, but the three-day meeting starting on Sunday is the second meeting in June to review the bill.

The committee is widely expected to pass the bill into law before the meeting ends on Tuesday.

The proposed bill has raised concerns among Hong Kong democracy activists and some foreign governments that Beijing is further eroding the extensive autonomy promised when Britain handed the territory back to China under a "one country, two systems" formula in 1997.

China has said, however, the bill will target only a small group of troublemakers as it tackles separatism, subversion, terrorism and foreign interference in Hong Kong.

Full details of the legislation have not been made public.

Hundreds of Hong Kongers marched silently through the city's streets on Sunday to protest the bill.

Riot police armed with shields were present and used pepper spray on protesters when scuffles broke out in Mong Kok during the event.

China's Global Times editor-in-chief, Hu Xijin, said in a tweet on Sunday the Hong Kong national security bill will "overwhelm HK Human Rights & Democracy Act, which US uses to interfere in HK affairs. In HK, people who've harmed nat'l security have shown fear of the upcoming law. It's good."

He said the bill "could be passed within days" and is "expected to be enforced powerfully." (Reporting by Emily Chow and Samuel Shen; Editing by Tom Hogue)