"Sorry sir, I am a policeman. Smoking is not allowed here. Please throw away the cigarette butts."
"Comrade police, I was wrong. I rarely smoke. You caught me this time. I will try not to be discovered by you next time."
"What did you say? If you smoke again, be careful to look good on you. Don't think I'm afraid of you because you have many fans. Be careful and I'll invite you to the Public Security Bureau for tea."
…
Concept: Behind every industry there is an unknown bitterness