Many reasons, relieving stress and looking for inspiration. Maybe he smoked for too long, but now he's just used to it and can't quit. Now I spend most of my time in the mainland and draw more brands. I used to smoke only Bai Wan. I smoke very hard. I remember him saying that it seems that he needs two or three packs a day on average ... but he also said that he would quit at the age of 35 ... I don't believe it! (Look at 12 people who quit smoking. God, Nicholas Tse just can't! ) but since you have BB, you must be temperate.
Feng Ting never drinks, because he says that drinking will make people lose their minds, and he hates the feeling that things are out of his control.