Duoyan Zheng's weight-loss exercise is an effective way for Asians to lose weight. However, any weight loss requires relative diet control. When I say diet control, I mean some high-calorie and high-fat foods. You don't need to eat very little. You'd better eat 4-5 meals a day, but you can eat about half full every time, so that your body can continue to burn off excess fat after exercise.
Besides, if you are a beginner in Duoyan Zheng's weight-loss movement, stick to it as much as possible. I will feel sore at first, but it will be much better to rest for a few days. After the first hurdle, there will be a process of persistence. If you are not sure, I suggest you go to Zhihu to find more detailed opinions and code the whole process. I wish you a slim figure soon:)