CJK ideographs disappear

[SuibianP]

Description

CJK characters disappear from LaTeX PDF output.

They are rendered normally in Chrome for HTML output, but also disappears when printing to PDF.

In both cases, myst reported no errors. However, for LaTeX output, this appears in test.shell.log

Latexmk: ====Undefined refs and citations with line #s in .tex file:
  Missing character: There is no 华 (U+534E) in font [lmroman10-regular]:mapping=t
  Missing character: There is no 华 (U+534E) in font [lmroman10-regular]:mapping=tex-text;!
  Missing character: There is no 文 (U+6587) in font [lmroman10-regular]:mapping=t
  Missing character: There is no 文 (U+6587) in font [lmroman10-regular]:mapping=tex-text;!
  Missing character: There is no 翻 (U+7FFB) in font [lmroman10-regular]:mapping=t
  Missing character: There is no 翻 (U+7FFB) in font [lmroman10-regular]:mapping=tex-text;!
  Missing character: There is no 译 (U+8BD1) in font [lmroman10-regular]:mapping=t
 And 21 more --- see log file 'test.log'

For HTML, emulating print CSS did not reproduce this issue, and the issue is not present on Safari and Firefox.

Proposed solution

Additional notes