That Japanese Man Yuta has a great video demonstrating just how much Chinese script do ordinary Japanese folk understand: https://youtu.be/rzJqXd-1dEU
It's so amazing how those languages are completely different from western languages. You can see the people in this video inferring multiple, sometimes totally unrelated meanings from the same set of symbols. That is not possible at all in western languages. You either understand a sequence of characters or you don't. One can debate the contextual and abstract meaning of a sentence, but not it's absolute meaning.
Ideograms have a major drawback, however. To represent most of things you need in daily life, you need thousands of them.