Rule introduction
Enter the game, look at the kanji on the board, then slide the kanji linked to the idiom in order. If you enter the exact four-letter idiom, the idiom will appear as a square at the top of the screen.
There are four ways to slide a block of kanji: left-to-right, right-to-left, top-to-bottom, and bottom-to-top. When you link to the specified compound word, the kanji block disappears. Also, the upper block falls to the lower side.

Function introduction
-If you don't understand these idioms, use the hints feature to find them and then learn and remember the annotations that appear below.
-Click the hint button to find idioms that you can clear, and the hints will be displayed word by word in the correct order.
-If you can't clear the idioms during the game, use the random function to randomly sort the remaining kanji.
-If you only need a small hint, you can use a one-word hint.