In China, there is a large number of characters, so the goal of the character simplification was to replace the complex traditional characters with easy to remember simplified characters and increase the literacy rate.
4級の漢字をどれだけ覚えていますか。
How many grade four kanji have you memorised?
そんな漢字は僕が読めないほどたいへん複雑なんだ。
That kanji is so complex, I can't read it.
日本語と中国語の漢字の発音はとても違いますね。
The Japanese and Chinese pronunciation for kanji is very different, isn't it?