Other than introducing a national security law, Beijing will also allow national security orgs to work in HK.
1. Still confirmed OCTS achieved "unprecedented success" in HK but it's facing "new risks and challenges"
2. Two types of forces are meddling HK - those "anti-China and trouble HK forces in the city"(反中亂港勢力)and "foreign hostile forces"...
4. Blame failure of BL23 legislation on "smearing and demonising by people...
5. Therefore Beijing decides to use its ultimate lawmaking power to introduce the law in HK by two steps: resolution + legislation -> Annex III of Basic Law