Those idioms are called "chengyu" (成语) and there are hundreds (or thousands) of them. Some of them come from ancient Chinese stories and poems and are pretty al

Those idioms are called "chengyu" (成语) and there are hundreds (or thousands) of them. Some of them come from ancient Chinese stories and poems and are pretty allegorical in nature; others, like (seemingly) the one mentioned in the article, are self-explanatory (to a Chinese speaker).