From 《
诗经·
秦风·
蒹葭》 (Shijing, 'Odes of Qin: The Reeds,' pre-Confucian, c. 600 BCE):
蒹葭苍苍,白露为霜。所谓伊人,在水一方。 (The reeds are lush, the white dew turns to frost. The one I seek is on the far side of the water.) One of the most famous poems in the Chinese canon; the archetypal image of unattainable longing.