"What you eat is grass, what you squeeze out is milk" is a famous saying of Lu Xun.
Lu Xun’s second wife Xu Guangping recorded this famous saying in "Happy Memorial". Original text: I am like a cow, what I eat is grass and what I squeeze out is milk and blood.
"Happy Memorial" is a fragment of Xu Guangping's memories in memory of Lu Xun written by Xu Guangping in the past 13 years from 1936 to 1949, but this book is not all Xu Guangping's commemorative articles. This book is some thoughts and fragments of memories written by Xu Guangping in memory of Lu Xun.
Extended information:
Lu Xun also has other famous sayings that promote dedication like "What you eat is grass, what you squeeze out is milk". For example: with a cold eyebrow and a thousand fingers, he bows his head and is willing to be a bully. It means to be angry with those who have no conscience and are criticized by thousands of people, and to bend down and be willing to be a coward for the common people.
This sentence comes from Lu Xun's poem "Self-mockery": With a cold eyebrow, he points his finger at a thousand men, but he bows his head and is willing to be a bully. It expresses Lu Xun's mentality of never giving in to his enemies and his willingness to serve the people.
When this poem was written, it was in the early 1930s. Lu Xun was in Shanghai and suffered various threats and persecution from the Kuomintang rulers at that time. At that time, the Kuomintang rulers banned books and newspapers, closed bookstores, promulgated bad publishing laws, and wanted writers. At the same time, they arrested and detained left-wing writers and secretly executed them.
Baidu Encyclopedia - Looking coldly at a thousand people, bowing one's head and willing to be a bully
Baidu Encyclopedia - A gratifying commemoration