Who knew that the seventh rule of assassins was a novel?

The seventh rule of assassins was a plot in the novel Assassin 567. The story was about a female assassin who used all kinds of means to fight against evil forces in order to complete her mission, while also showing her wisdom and courage. In this story, the seventh rule of the assassin's code was described as " not to be without a master for a day ", which meant that the assassin must always remember his identity and responsibility to maintain his independence and autonomy.