Chicken feathers for Sugar: the grass-roots people in the basis of trade

"Probably the earliest times in  1970, I started to do business, and chang sugar from Chicken feathers . All Yiwu old businessman from the small businesses did in this way .The bad truth is that there is not enought field for our family to live. Therefore, farmers were used to change chicken feathers for brown sugar to outside city from his home.They used the money they earned by this way for their basic live .A commond saying ,these poor man gave a birth to the yiwu market.