The closure of the skeletal line referred to in the question is the closure of the epiphysis, after which it is impossible for the body to grow taller. Because the human body grows taller through the ossification of the epiphysis, after the epiphysis closes, the human body can no longer ossify, the bones will not grow longer, and the height will not grow again. It is best to go to the hospital and have a radiograph taken to see if the epiphysis still exists. If the epiphysis exists, you will still be able to grow taller. If the epiphysis has not yet closed, you can do more outdoor sports and vertical jumping to stimulate the epiphysis, which effectively promotes the ossification of the epiphysis and helps your body to grow taller. At the same time, eat more protein and calcium ion content is relatively high in food, such as meat, milk, eggs, crucian carp soup, blackfish soup, bone soup, etc., but also can be roasted fish bones, rolled into a powder for brewing can also play a very good supplemental effect of calcium ions.