從前額髮際線開始，量度至眉骨；眉心至鼻子的底端；鼻底至下頦，如果各佔臉部長度的三分之一，我們會認為這個人是美麗的。

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From the forehead hairline to brow bone, from brow bone to the bottom of the nose, and from the bottom of the nose to the bottom of the chin. If the numbers are equal, a person is considered more beautiful.