Twenty thousand yuan, for many wealthy people may only be a drop in the bucket, but in 54, sanitation workers Yang Dongen eyes, is a few years time saving scrape together. On March 1, Yang Dongen in yinzhou district sent twenty thousand yuan of money to the charity federation staff's hands. This, he says, is a heart, the payment of 45 years ago in order to thank the teacher to help him two yuan and fifty cents the favour of the tuition fees. Yinzhou district charity federation staff can still remember, Yang Dongen to...