To express my personal opinion, hunchback is a common spinal deformation in our life, which not only affects our physical beauty, but also threatens our health. Humpback is a morphological change caused by thoracic kyphosis. Weak and flabby back muscles can lead to hunchback.

Although I haven't done it myself, a good friend I know has done manual bone setting and has severe scoliosis, which seems to be more than 30 degrees! It's pretty serious. You can't stand up when you sit, and it hurts when you move a little. It's no use wearing braces. It was Fan Xiaoxiang who did six cycles with his bare hands. Now he has got rid of some bad habits and is basically all right. I say this because I personally think it is still useful to set bones by hand. As for the degree of correction, it depends on my own situation.