Аннотация:This paper, through the comparative analysis of Jiangsu Governor Zhuang Yougong's memorials to the throne and relevant records of General Investigation on Qing-dynasty Literatures, concludes businessman Yang Yuhe and his colleagues took advantages of imperial policies and monopolized trades with Japan.They obtained government support, frame regulations and pushed out other merchants with the excuse of paying off accumulated copper and debts of some merchants and officials.Yang Yuhe was also a timber merchant in Zhejiang Zhapu.