/usr/share/doc/ubuntu-kylin-sso-client-qt/changelog.gz is in ubuntu-kylin-sso-client-qt 0.1.2.5.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/ubuntu-kylin-sso-client-qt/../python-ubuntu-kylin-sso-client/changelog.gz