Hi Yangfl, Gianfranco,
As previously explained by Yangfl, files in /usr/share/dman/ are
richtext manuals intended to be read by deepin-manual (which is not in
Debian Archive yet).
"Dman" manual files contain some images, which made lintian aware that
this is an arch-dep package with large arch-indep files.
Splitting the package into "deepin-voice-recorder" and
"deepin-voice-recorder-doc" might be an option. We could choose to
remove all files under /usr/share/dman/ too. A third option is to keep
everything intact since they do not harm at all. Personally I think
all three approaches are acceptable.