First, Wilber Pan is not a self-disciplined person in private. Judging from the way he eats fat meat, he is quite indulgent in private.
Wilber Pan participated in a variety show before, in which he could eat some delicious food. Wilber Pan said he should eat less, but he didn't eat less at all. So from this perspective, he should not be a self-disciplined person in private. Anyone who has a little self-discipline should be like Wallace Chung, and keep in shape both during and after the show. This is a sign of self-discipline, and Wilber Pan gained weight after being inactive in front of the camera.
Second, this time Wilber Pan lost weight not because of self-discipline, but because she wanted to become popular through variety shows. Only in this way can he lose weight in a month.
In fact, Wilber Pan's weight loss this time is not the result of self-discipline, but because he wants to participate in the variety show My Brother. Prior to this, Cyndi Wang succeeded in becoming popular through this variety show, which not only gained resources but also gained popularity, and was regarded as bringing his career back to life. So Wilber Pan should also want to arouse people's memories of him through this type of variety show, so that his future resources will not be abused as they are now, at least his life will be a little better as it is today, so he started this plan.
Finally:
I have to say that it seems really easy for artists to lose weight. Everyone is easy to get fat, but it doesn't seem too hard to lose weight. It's really enviable.