Three Chinese, Bu, Chu and Fu emigrated to America. In order to integrate well, they decided to change their names to something more American. Bu would henceforth be called Buck. Chu changed his name to Chuck and Fu changed his mind and went back to China.
The Emperor Has No Clothes is an idiomatic phrase, that comes from a tale by Hans Christian Andersen where a vain emperor is tricked by two swindlers who promise to make him a set of clothes that are invisible to anyone who is unfit to hold their office or is stupid.
In reality, the swindlers are just pretending to weave the clothes, and the emperor ends up walking naked in a parade, unwilling to admit that he cannot see his own clothes.
The phrase has since become an idiom used to describe a situation where someone is pretending to be something they are not, or when something is revealed to be a fraud. It’s a way of pointing out that someone is not as powerful or impressive as they claim to be, or of exposing a lie or deception.