tao *, a famous writer of the eastern jin dynasty (317-420), wrote the well-known essay peach-blossom spring. in it he tells a story which goes like this: a fisherman happened to come upon a place called peach-blossom spring. squeezing through a cave, he found a village, the residents of which were descendants of refugees from the qin dynasty. it was a paradise isolated2 from the outside world, without exploitation or oppression, and *rybody living and working in peace and contentment（满足） . the fisherman left the villagers and went home. but he could n*r find the peace again.
this idiom is derived3 from the above story, and it is used to mean an isolate1, ideal world.
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