This is cotton ginning machine used in Qing Dynasty.Found in Yunnan province of China.It is made of wooden, measured 78cm long, 61.5cm high，56cm wide. The cotton ginning machine was made by the Jino ethnic minority. They use this machine to separate cottonceed from cotton. There are two hardwood sticks that connected with crooked handle. By rocking the the handle and putting the cotton through the two sticks, the cottonceed would be separated from the cotton.