The script-less Japanese adopted them, but they didn’t fit their language well on their own. So, they created hiragana (a syllabary) to be able to properly write their own language. A Japanese sentence typically comprises Chinese ideograms and hiragana.
Later, both the People’s Republic of China and Japan simplified their ideograms, but not in the same way, and the Chinese went much further.
So, now, Taiwan, Hong Kong and Macao use the traditional hanzi.
Japan uses their kanji, somewhat simplified.
And the PRC, Malaysia and Singapore use the simplified hanzi.
South Korea uses hanja which is virtually the same as traditional hanzi. And North Korea completely abandonned the Chinese ideograms.
The Chinese invented the Chinese ideograms.
The script-less Japanese adopted them, but they didn’t fit their language well on their own. So, they created hiragana (a syllabary) to be able to properly write their own language. A Japanese sentence typically comprises Chinese ideograms and hiragana.
Later, both the People’s Republic of China and Japan simplified their ideograms, but not in the same way, and the Chinese went much further.
So, now, Taiwan, Hong Kong and Macao use the traditional hanzi.
Japan uses their kanji, somewhat simplified.
And the PRC, Malaysia and Singapore use the simplified hanzi.
South Korea uses hanja which is virtually the same as traditional hanzi. And North Korea completely abandonned the Chinese ideograms.