How to calculate finger thread? What does it mean that there are no snails in ten fingers?

Description of the relationship between finger thread and human: X means there is no screw, O means there is screw, and the order of thread in brackets is thumb order, male left hand, female right hand. 1.(XOOOO) is capable of speaking, stable in character and strong in self-esteem. 2.(OXXXX) is gentle, good at inducing others, enthusiastic and independent. 3.(OOXXX)。 Deal with affairs thoughtlessly, but have a plan and have the ability to act. 5.(OOOXX) firm belief, limited to appearances, perseverance in practice, and thoughtlessness in doing things. 6.(XXXOO) Sweet mouth, emotional and lively, with poor consequences. 7.(XXXXO) Perseverance, wit and cunning, and they are generally bitches. 8.(OOOOX) Steady. Simple personality, generous and upright, fluctuating thoughts and self-reliance. 10.(OOOOO) Have faith in work, work hard, have leadership ability, be healthy, and don't listen to other people's opinions. 1 1.(XOOOX) Strong feelings, liveliness, unwilling to lag behind, self-esteem, ability, but uncoordinated. Self-righteous. 13.(XOOXX) enthusiastic, a little neurotic. 14.(OXXOO) Willing to accept, lascivious and helpful. 15.(XOXXX) The meek expression is actually pride and luck. (oxooo) Super intelligent and emotional. 18.(XOXXO) ruthless, positive and enthusiastic. 19.(XOXOO) Steady, positive and ambitious, but it was ruined by pornography. 20.(OXOXX) The director is beautiful, but uncertain and can't stand the test of pornography. But changeable. 22.(OXOXOXO) is full of emotions, active and emotional. 23.(OXOXOXO) was used by others, with strong feelings and a bad ending. 24. (xoxo) loves culture, full of worries, strong and generous, and works seriously, but hesitates when things happen. 25.(XXOOXO) studious. Depressed 27.(XXOXO) Passionate and rude, boastful, sometimes worried. 28.(OOXOX) handy, positive, clean, carefree on the surface, complicated inside. 29.(OOXOO) handy, smart and silent. 30.(XXOXX) There are many friends, deep feelings and affection.

Note: O is Luo (circled),

X is a dustpan (any other mode)