On Mon, 3 Jan 2022, Eli Zaretskii wrote:

>
> Suggested implementation:
>
>  . import the Unihan_Readings.txt file into Emacs
>
> Patches welcome.
>

Attached is the diff listing for admin/unidata/README to source 
Unihan_Readings.txt from

=> https://www.unicode.org/Public/UCD/latest/ucd/Unihan.zip

The version specific path alternatives are

=> https://www.unicode.org/Public/14.0.0/ucd/Unihan.zip
=> https://www.unicode.org/Public/15.0.0/ucd/Unihan-15.0.0d1.zip

-- 
vl