天涯地角

Explanation: Described as very far away, or very far apart. 　　Source: Nan Chen Xu Ling "phase when the emperor Wu Emirates Ho Lingnan book" End of the World Miao Miao, to corner a lengthy, and not by the machinations of surface, but the situation enterprises. " 　　Examples: Endless is the sadness, ~ wondering times. (Song Yan, "Tasha Hang" words)