2015-01-12 13:45 chinadaily.com.cn Web Editor:Yao Lan Yuan Xiangzhen, who is 66-year-old, always carries the mail packages in her left arm as her right leg was broken and she doesn't want to put more pressure on it.Yuan and her son became couriers four years ago to pay a 100,000 yuan ($16,000) debt to a usury company. In 2013, with the help of the media, the company exempted interest on the loan.[Photo]