I learned a sentence in fortune-telling network called "Buddha's heart is like a snake (referring to others)" ... how to prevent or avoid this kind of person?

He is secretive, duplicitous and duplicitous. He doesn't touch or work together. He can stay as far away as possible. If there must be an intersection because of work needs, don't talk to such people in depth, and you can't throw out all the truth. What's more, I'd rather suffer a little loss than offend such a person, because you never know when he will trip you up.