Except prodigies), even if someone is fat, they should lose weight as trainees for several years. Think about it, they practice dancing every day and can't sleep for hours. They can lose several pounds a month, so liposuction is impossible (you see Zhao Yalin, who is often with EXO, is not thin either. If he can get liposuction, he will go early, after all, he will appear every day.
Pure hands, I hope I can help you