What? This is totally a thing in Chinese, and at least mentioned in primary school/ middle school. https://zh.wikipedia.org/wiki/%E5%85%AD%E6%9B%B8 https://zh.

What? This is totally a thing in Chinese, and at least mentioned in primary school/ middle school. https://zh.wikipedia.org/wiki/%E5%85%AD%E6%9B%B8 https://zh.wikipedia.org/wiki/%E5%85%AD%E6%9B%B8 or https://en.wikipedia.org/wiki/Chinese_character_classification https://en.wikipedia.org/wiki/Chinese_character_classificati... https://baike.baidu.com/item/%E5%BD%A2%E5%A3%B0%E5%AD%97 https://baike.baidu.com/item/%E5%BD%A2%E5%A3%B0%E5%AD%97 https://baike.baidu.com/item/%E4%BC%9A%E6%84%8F%E5%AD%97 https://baike.baidu.com/item/%E4%BC%9A%E6%84%8F%E5%AD%97 Also, for it's worth, I don't think this is generally taught in Japan or in Japanese language class either.