what should I do when the cherry into the box?

Hi @phanthuyet345 and welcome to our Community! 😊

Unfortunately when the cherry ends up in the licorice block, you will have to repeat the level. To pass this level you must be careful not to destroy the licorice in the boxes otherwise the cherry will fall there and cannot be moved anymore.

I just tried the level and managed to simulate the situation.

There's nothing you can do, it seems. 😐

I call this bad level design, as no booster can help you reach the goal. Moreover, there's no warning whatsoever that something like that could happen. 😒

Have fun! ☺