The phrase "Chinese Dream" (中国梦) corresponds with the associated idea of a hope for restoring earlier dynasties' lost national greatness and has ancient origins in Chinese literary and intellectual history.[6] In the Classic of Poetry (Shi Jing), the poem "Flowing Spring" (下泉) describes a poet waking up in despair after dreaming of the former Western Zhou dynasty. During the troubled Southern Song dynasty, the poet Zheng Sixiao wrote a poem in which he coined the phrase "Heart full of [the] Chinese Dream (中国梦), the ancient poem 'Flowing Spring.'"[7] Moreover, popular patriotic literary and theatrical works in early 20th century China also made reference to a "China Dream."[6]