Although Ali has completed his task, he has lost almost all hope of life in his heart. The existence of the little girl and the plot of the last scene are also the last hope of the protagonist Ali. Affin's children are also one of Ali's goals in his future life. The child took off the needle and threw it into the trash can, indicating that the child still gave Ali hope of life and love (hug).
After Affin was finally killed by drugs, the plot suddenly progressed to the point where the owner had to leave and was arrested by the police. On the one hand, it was the responsibility of undercover, on the other hand, the death of Affin made undercover Ali hate drugs, thus killing the murderer. He lost his only friend when his beloved teacher was betrayed by him.
Finally, Ali questioned "which is the drug caused by emptiness, which is more terrible ..." At this time, Ali's heart was also eroded by the loss of friends and lovers.
"The Disciple" plot:
Disciple Rules continues the contest between police and bandits in Night in Mong Kok, but it is different from the traditional confrontation between police and bandits, and it injects strong social and ideological meaning through the theory of drug terror.
The film shows the inside story of drug production and trading with the mentoring relationship between Ge Kun and Ali, which constitutes the main line of wrestling between the police and robbers.
It also shows the great harm of drugs with the drug abuse tragedy of Afen couple, which constitutes the auxiliary line of narrative. This story, which broke away from the original soldier-thief game routine, endowed Disciple Rules with some rare social and ideological depth of Hong Kong police films.