How to treat TV series old boys?

After watching old boys, I have a lot of speeches about stories, acting skills, feelings and so on. I can't say anything that can be unconventional and striking. Here's a little detail that makes me think this drama is good, that is, after watching so many episodes, there is not a single scene of smoking! Generally, this kind of drama about men seems that if you don't light a cigarette in your hand, your mood will not come out. A person should smoke when he is depressed, when he works overtime and stays up late to refresh himself, and when he is resting on the terrace, he should smoke, and his brothers should never leave their hands. However, the play old boys gave me a surprise. Until now, there is no smoking scene. Drink when you drink, and drink coffee when you stay up late to refresh yourself. Liu Ye and Zheng were chatting on the terrace with a cup of coffee in their hands. The only scene related to cigarettes is the cigarette end in the ashtray in the bathroom. The exit of this cigarette butt shows that the people in the play don't smoke, but the writers and directors can do it with their heart, which makes me admire. I give ten points for the "smoke-free" of this play.