我曾经遇到过一个人，他的厚颜无耻真是让我大开眼界。无论是在工作中还是生活中，他总是不顾他人感受，只为自己谋利。甚至在犯错时，他也会把责任推到别人身上，毫不在意自己的言行给他人造成的伤害。我从未见过如此毫无道德底线的人。

In English:

I once met a person who had such an incredible level of shamelessness that it truly opened my eyes. Whether it was in the workplace or in daily life, he always put his own interests above everyone else's feelings. Even when he made mistakes, he would push the blame onto others without any consideration for the harm his actions and words caused. I have never encountered someone with such a complete lack of moral principles.