This quiz contains 446 important four-character idioms that adults should remember. By using the quiz format, you can efficiently learn the meaning of the four-character idioms and the kanji notation, and acquire common sense in a short period of time.
It is useful for making public speeches, writing essays and dissertations, and reading novels. It can also be used for junior high school students, high school students, and other linguists, and for kanji tests.

Usage: The question sentence is displayed. After that, press the "See answer" button to display the answer. If you press the button for whether the answer you thought was "correct" or "incorrect", the next question is displayed.
If you answer to the end or press the "Done" button, "Number of questions", "Number of correct answers", and "Rate of correct answers" will be displayed.
* You can also prevent questions that have been answered once.