What's "hard"? Over millennia the sharp corners that make learning and using a language difficult have all been knocked off. Characters that are hard to recognize fade out or are modified. Grammar simplifies. And as an existence proof: more than a billion people speak various Chinese languages, almost all of them learning them as children; probably close to a billion can read and write it to some degree, many with little other schooling.

You likely come (as did I) from a background in which such languages are quite unfamiliar but that doesn't make them harder or easier in general. John DeFrancis wrote a funny essay about the "Japanese plan to replace the Roman alphabet within their empire after conquering North America" as a parody of the people who think that the Chinese and Japanese should replace their writing with an alphabetic approach.

You may not realize how hard it is for many speakers to learn English spelling where spelling is more conservative (to preserve meaning) than more phonetic writing systems like German, Spanish, Korean etc. The terms are seemingly more obscure. In fact it's to reduce that problem that we violate English "rules" to conserve the declension of the original noun (e.g. felid/felidae) which is uniform when the term is a loan word common across languages.