世外桃源

Etymology
Based on The Peach Blossom Spring by.

Idiom

 * 1) ; Shangri-La; Arcadia; lotus land; utopia; unexpectedly fantastic place off the beaten path, usually an unspoiled wilderness of great beauty; land of idyllic beauty; fictitious land of peace; heaven of peace and happiness; retreat away from the turmoil of the world; place for taking refuge