Before revision:  Based on a misclassification error of 32\% for Jinchuan Group's stock (HKG: 2362), we further test a simple stock trading strategy, which leads to a back-tested return of 296\%, or an excess return of 130\% within one year .
After revision:  Based on a misclassification error of 32\% for Jinchuan Group's stock (HKG: 2362), we further test a simple stock trading strategy, which leads to a back-tested return of 296\%, or an excess return of 477\% compared to the stock itself in a year and a half .