/usr/share/doc/libreoffice-help-zh-cn/changelog.Debian.gz is in libreoffice-help-zh-cn 1:6.0.3-0ubuntu1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/libreoffice-help-zh-cn/../libreoffice-l10n-zh-cn/changelog.Debian.gz