The Secretary for Security of Hong Kong introduces the four crimes governed by the National Security Law: Only those with evil intentions will be afraid. The crime of secession was mainly aimed at people who blatantly called for "Hong Kong independence" during the "black violence" The reason for establishing the crime of subversion of state power was that at that time, anti-government forces demanded that the chief executive step down, disband the police force, and launch a general strike to paralyze the government.
Some people even planned to detonate them in undersea tunnels, railways, courts, trash cans on the streets, and government buildings.