wind and rain darken the sky like night; refers to a grim and grave social or political situation, or staying true to one's principles despite a dangerous environment 风雨如晦，鸡鸣不已 fēng​yǔ​rú​huì​jī​míng​bù​yǐ

the sound of a rooster crowing; used to refer to dawn or the early hours of the morning

(used after a verb or adjective) without end; incessantly; to not stop