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In the late 1940's two young, idealistic American scientists made the extraordinary decision to settle down and work in a remote district of China. They were drawn by the promise as they saw it, of profound social revolution. Joan Hinton was a physicist, one of the few women to have worked on the Manhattan Project to develop the atomic bomb. Sid Engst was from Cornell University in up state New York, and a specialist in agriculture. This is a fascinating account of the lives these two Americans built for themselves in the very midst of China's most troubled times.