For the hidden quest

It's a typical idle ad game where you grow classrooms, student dorms, etc., to expand your academy. Once you fully grow the academy, another regional academy will be unlocked, but you'll have to start from scratch as most of your cultivated assets and money won't carry over to the new academy. The game can get boring easily since there aren't any particular gimmicks for each region. However, the hidden quests offer over 30,000 gems in total (excluding paid quests), so it's worth doing for the gem rewards!