1 farmers: a three acres of land per mu net income of 400 yuan to say from the Tang Dynasty began to cobble together (not bad);
2 workers: the monthly salary of 1500 yuan from theOpium War (weekend work has not closed);
3 white-collar: $60000 from 1960, to work with so much money so far do not eat or drink (cancel holidays);
4 robbers: continuous commits a crime 2500 times (must be the victim is white-collar) about 30 years.
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