Word Crash - Word Stack Puzzle

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.