Hong Kong Variety Show: a Cross-Border Boss Becomes a Police Legend?

Once Lu Genghua traveled through time, the mercenary instantly turned into a Hong Kong comprehensive school police officer? The beginning of the story, "Who is he? I think he's good." "Tsk, he's just at the bottom of his grade." Later in the story, after the graduation ceremony, five police bosses crowded into the principal's office. "Principal, I have been watching Lu Genghua for a long time. I can't miss it again this time!" "What's wrong with missing it? It depends on where is more suitable for him!" "That must be our O-Record. Talents like Lu Genghua must come to our O-Record!" Over there, there are two big guys who can't get a word in and are running around anxiously... The principal's face darkened when he saw that his office was almost turning into a vegetable market. "Shut up! Lu Genghua, I have my own arrangements!!!"