一唱雄鸡天下白

From 毛泽东《浣溪沙·和柳亚子先生》 (Mao Zedong, 1950), a ci written in response to 柳亚子 at the first National Day banquet: 长夜难明赤县天，百年魔怪舞翩跹，人民五亿不团圆。一唱雄鸡天下白，万方乐奏有于阗，诗人兴会更无前 (The long night was hard to lighten over the Red County sky; a century of demons danced on; five hundred million people unreunited. One crow of the rooster and all under heaven turned bright; music resounds from every land, even Khotan; the poets' joy has never been greater). The 'rooster' = the new PRC ending the long dark night of old China. Mao adapted the image from 李贺《致酒行》: 雄鸡一声天下白.

The original Tang form is 雄鸡一声天下白 (Li He). Mao inverted it to 一唱雄鸡天下白. Used almost exclusively in PRC-era rhetoric about historical turning points; treat with full awareness of its political register.