a tiger on level ground may be bullied by a dog—a man who has lost power or influence may be insulted by an underling
虎落平阳被犬欺hǔ luò pínɡ yánɡ bèi quǎn qī
指老虎离开自己的地盘，落到了平地上，连狗之类的动物都要欺负它。比喻昔日的霸王如今丧失了自己的权势。a man who loses position and influence may be subjected to much indinity, unable to display his prowess