On the road of code farmers, there is no way out !!!
整理 Unicode 經常會使用到的內碼區域並透過 Regex 自動比對文字
https://blog.miniasp.com/post/2019/01/02/Common-Regex-patterns-for-Unicode-characters
SELECT x, utl_raw.cast_to_raw(x), y, utl_raw.cast_to_raw(y), asciistr(x), asciistr(y) FROM ( SELECT unistr('\4E2D') AS x, '中' AS y FROM dual );