Well, according to your description, the so-called buckle line estimation does not refer to a certain line, but to a method of fixing the line. The so-called button line should start with a method called intradermal suture. In this suture method, all the needles enter the dermis except that the first needle enters from the outside of the skin and the last needle comes out. In other words, the suture is basically in the skin, only the two ends are exposed. This kind of splicing looks better. Therefore, the two exposed threads need to be properly fixed. Actually, there are several ways. One of them is to find two small buttons to buckle together. This is called a button line. If I guess correctly, the so-called "intention" is in the choice of suture method. Intradermal suture is generally more beautiful than ordinary suture, but it is time-consuming and laborious, and it is more difficult to sew more densely and finely for beauty. For example, chestnuts, in the plastic surgery department of the hospital where I practice, 1cm intradermal beauty suture needs 600 yuan. ...

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