Incomplete recognition

[lxfzerolearning]

Markdown parts of the syntax render unsuccessful, such as unordered lists, strikeouts, etc., what should be done

[ChristianMurphy]

remark by default supports everything in commonmark https://commonmark.org/help/
Some features like strike through are part of another standard GitHub flavored markdown, which can be enabled with https://github.com/remarkjs/remark-gfm

If you have further questions on how to enable syntax features, consider using a sandbox

description	codesandbox	stackblitz
remark only (for markdown to markdown)	codesandbox	stackblitz
remark and rehype (for markdown to html)	codesandbox	stackblitz
react-markdown	codesandbox	stackblitz

to show what syntax you are trying and how you have configured remark.