fool's paradise:a state of contentment that is based on false beliefs 黄粱美梦
A: Does the chairman realize that our company's business is going downhill?
董事长知道我们公司的业务在走下坡吗?
B:I don't think so. I'm afraid he is still living in a fool's paradise.
我想他不知道.他恐怕还在做他的黄粱美梦呢.