ctexheading is incompatible with koma-script documents

[suxpert]

How to reproduce:

\documentclass{scrbook}
\usepackage[heading=true]{ctex}

\begin{document}
\tableofcontents
\end{document}

Then

latexmk -xelatex

output the following warnings:

Package ctex Warning: None of the standard document classes was loaded. ... Package ctex Warning: Oops! Command `\ps@headings' is NOT patchable.

Package ctex Warning: Oops! Command `\quotation' is NOT patchable.

Use ctexheading gives the similar warnings.

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BTW, if the document contains TOC etc, their names (\contentsname et.al.) are still in English rather than in Chinese.

Environments: TeXlive in kali linux (wsl2), with ctex version 2.5.5, koma-script version 3.28.