I was watching a youtube video today talking about language learning (specifically chinese). and something caught my attention. They were basically explaining that when you reach a high level of the language one of the differences is all the cultural expressions/sayings that native speakers use casually and appropriately in convo and that learning these gives you a key advantage to most other learners. So I was wondering if there is any deck or place I can learn some of these references like I do know some that come up ever so often like 一石二鳥 (two birds one stone).
