With a cold brow and cold eyebrows, you will bow your head and be willing to be a bully. It comes from Lu Xun's "Self-mockery". "Being willing to be a ruthless cow for the common people" refers to never giving in to the enemy and being willing to serve the people.
Chinese name
With a cold eyebrow and a thousand fingers, he bows his head and is willing to be a bully
Definition
It means never yielding to the enemy and being loyal to the people People are willing to serve.
Source
Lu Xun's "Self-Mockery"