Sorry! No such tricks exist. You gained the excessive weight/body fat in many months, if not years! Is it reasonable to lose all that weight that you gain in many months, within just 10 days!!????
Of course not!
Maybe it is possible to lose a lot of body weight by starving and not eating properly. But it will do more harm than good as you lose muscle mass along with fat. Your energy levels will drop and you will feel more tired and your health will go for a toss!
A healthy and reasonable pace of losing weight (body fat) is around 3 – 4 kgs in a month!