Unnamed events, more than one thing, how many secrets are hidden behind these things, how much tenderness is hidden behind this horror, how much sweetness is hidden behind the dangers, just like a lemon, it will be sour and greasy if eaten alone, but if you add some honey, it will become sweeter. This can be said to be a sweet article, but most of the time you need to find sugar in the glass slag... (This article is mostly fictional, but there is a little bit of truth mixed in...)
Purpose: Be good at observation and discovery, and enjoy hardships