Thank you @janndg..i've been searching for the meaning of the simian lines for years and mind you some explanations are kinda disturbing. So far i've find the following link best decsribe characteristics of those with simian lines and of which I finally know why they said its a bad sign to have for a women.

https://www.yourchineseastrology.com/palmistry/simian-lines/

Well, need to have an open mind in studying these subject. Well for me its another tools of understanding myself better.