From Mao Zedong's 1961 poem 《
七律·
和郭沫若同志》:
金猴奋起千钧棒,玉宇澄清万里埃. It borrows the image of the Monkey King from 《
西游记》 sweeping away demons to allude to the struggle against revisionism.
玉宇 is an elegant term for the heavens or cosmos, used in classical Chinese for the sky (as in Su Shi's
琼楼玉宇).