sentences:  General Ma had been using the Bank, a branch of the Government of China's exchequer, to arrange for silver currency to be transported to Baotou to use it to sponsor the trade.While Ma caused opium to become rampant due to his support for the cultivation of opium and its trade in Suiyuan, he also enabled policies which benefited the residents in Suiyuan, filling posts in military, educational, and administrative manners with Suiyuan people and expanding education.Senators started an impeachment against Ma Fuxiang over his involvement in the opium trade and farming.