"With cold brows and cold eyes, one is willing to bow his head like an ox"
The main idea is: Never give in to the enemy, and be willing to bow like an ox to the people.
From Lu Xun's "Self-mockery"
The whole poem is as follows:
What do you want when you are transported to the canopy? I have already met you before I dare to turn over.
I pass through the bustling city with my broken hat, and my boat is full of wine.
His eyebrows are cold and he points his fingers at thousands of people, bowing his head and willing to be a Ruzi Niu.
Hide in the small building and become one, regardless of winter, summer, spring and autumn.