Please don't suddenly change the subject of the Daily Challenge.

The rule for the Daily Challenge is that you can only post what you made that day, but it is announced a few days in advance, so I prepare until I can post some of it the day before. I think this has happened before, but if the subject is suddenly changed, that preparation will be wasted. I would like you to stop making sudden changes because it wastes the generation stamina used for the preparation. If you are not familiar with the genre, the time spent researching will also be wasted. Please consider the impact on users' time and effort. If the change is made the day before, I think it would be better to distribute compensatory stamina coins.