*Jīng wèi tián hǎi* originates from ancient Chinese mythology in *The Classic of Mountains and Seas*. Nüwa, daughter of Yan Emperor, drowned in the Eastern Sea and reincarnated as bird Jingwei, endlessly dropping twigs and stones to fill the sea. This idiom honors unbreakable will and persistent struggle against formidable difficulties.
The Goddess of Wu Mountain, according to myth and legend, was the daughter of the Yan Emperor—or, in some versions, the daughter of the Heavenly Emperor – named Yao Ji. She died before ever marrying and was buried on the southern slope of Wu Mountain.